I dont even know where to start with your post. So if Halo shipped 5million in its first 3 month and its been sitting on 4million psyical sales for the past few months than you expect it to still be sitting on 4m sales? Espeacilly when MS came out and said its the highest selling digital game on Xbox *At the time*

It also grossed $400m with combined Software and Hardware sales. How much did UC4 make for Sony?

The way you should look at it is like this - UC4 is Sonys best game on PS4 and it has double the User base *which helps boltster sales* Halo 5 is the lowest selling mainline Halo game in the franchise and it still matches Sony's best. Compliment to Halo 5. UC4 will go on to sell like it usually does around 5 to 6m and Halo 5 will most likely end up the same with half the install base.

If Halo 5 was a PS4 exclusive it would have outsold UC4 quite easily.

Halo 5's attach rate is also twice that of UC4.

1. Where are you getting 4 million physical sales 3 months after launch? If it had shipped 5 million units (including digital sales) how would it have sold 4 million retail copies at the same time? As I pointed out, game shipments are very few and far between after the launch window.

2. It grossed $400m with combined software and hardware sales? Which means...what, exactley? Uncharted 4 sold more than 2.7 million copies in it's first week. How many copies did Halo 5 sell? Since, this is a discussion of video game sales, not gross revenue.

3. The way I "should" look at it? You mean the way that fits your narrative? Tell me, is Halo 5 not Microsofts best selling exclusive? It has also had more than twice the amount of time to sell, and has already gone through its first holiday season. Not to mention, Uncharted actually isn't Sonys best selling exclusive franchise. Though, GT does seem to find itself in a similar situation as Halo.

4. I'll reiterate. Halo 5 is way down from previous games. Why would it's lackluster sales be to its credit? "Yay, you almost sold as well as a game you should have outsold easily"?

5. It's also important to point out that because Halo 5 is older, and hasn't sold aswell, each week that goes by will have it slipping farther and farther behind Uncharted 4.

6. No, it likely wouldn't be outselling Uncharted 4 at all. Uncharted 4s average weekly sales are more than double those of Halo 5. Especially since the smaller a userbase, the more likely they are to be dedicated to the exclusives of that console company (look at Nintendo).

Uncharted 4 is selling better than Halo 5. It's lifetime sales, will be higher than Halo 5. Halo is not the franchise it used to be.

Okay so what kind of impact does releasing a game during Christmas vs releasing a game in May have? Or does that not count either.

I really wouldn't have expected people to be this defensive about a sales comparison, who gives a fuck. This is the worst selling halo so far, against the best selling uncharted ever with the latter outpacing the former in half the time. It is what it is.

While install base should have some kind of an effect, you're likely dramatically overestimating it in the bolded. There are many other variables, some of which are often far more significant than install base. 

Why has Pokemon X/Y sold 15+ million units, rather than 6 - 7 million?
Why did Halo 3, Reach, and 4 all have similar launches, despite dramatically different install bases at each time? 
Why is Black Ops 3 on the PS4 seemingly doing better than any previous version of CoD? 
Why is God of War 3 the highest selling entry in the series, despite half the number of systems? 
Why did Forza Horizon 3 launch better on the X1 than FH2 did on the X1 + 360?
Why do individual game sales not increase with install base?
Why, despite double sales and seemingly similar attach rates, do some series sell less than double on the PS4?
Why did the PS4 version of FIFA15 sell 3:1 versus the X1 version?
Why did Destiny sell more on the PS4/X1 than PS3/360?
Etc

Some of these questions are easier to answer than others, but all are down to variables outside of install base. Often they can make install bases seem almost irrelevant (even if that's not the case).

Like i said, install base no doubt does have some kind of effect, but linear extrapolation isn't logical at all. There are too many other variables, most on which in UC4's case work in its favour (pre-existing fanbase, marketing, etc), that throw the math off.

1. Where are you getting 4 million physical sales 3 months after launch? If it had shipped 5 million units (including digital sales) how would it have sold 4 million retail copies at the same time? As I pointed out, game shipments are very few and far between after the launch window.

2. It grossed $400m with combined software and hardware sales? Which means...what, exactley? Uncharted 4 sold more than 2.7 million copies in it's first week. How many copies did Halo 5 sell? Since, this is a discussion of video game sales, not gross revenue.

3. The way I "should" look at it? You mean the way that fits your narrative? Tell me, is Halo 5 not Microsofts best selling exclusive? It has also had more than twice the amount of time to sell, and has already gone through its first holiday season. Not to mention, Uncharted actually isn't Sonys best selling exclusive franchise. Though, GT does seem to find itself in a similar situation as Halo.

4. I'll reiterate. Halo 5 is way down from previous games. Why would it's lackluster sales be to its credit? "Yay, you almost sold as well as a game you should have outsold easily"?

5. It's also important to point out that because Halo 5 is older, and hasn't sold aswell, each week that goes by will have it slipping farther and farther behind Uncharted 4.

6. No, it likely wouldn't be outselling Uncharted 4 at all. Uncharted 4s average weekly sales are more than double those of Halo 5. Especially since the smaller a userbase, the more likely they are to be dedicated to the exclusives of that console company (look at Nintendo).

Uncharted 4 is selling better than Halo 5. It's lifetime sales, will be higher than Halo 5. Halo is not the franchise it used to be.

Do you understand how sales work? Uncharted 4 is outselling Halo 5 right now on a weekly basis because it’s still fresh. That’s because Halo 5 is a year old. Sales don’t pick up steam after launch. UC4 is also claiming dimensioning sales. Which game will have the longest legs will be the interesting story. As of right now UC4 hasn’t outsold Halo 5s lifetime sales as its been on 4m copies for the past couple of months. UC4 has just reached that milestone. That’s just Physical sales.

As for the Digital sales debate, MS claimed Halo 5 is there bestselling Xbox Live game *at the time* so expect an increase of something around the 20% mark on top of its physical sales. Which means Halo 5 is beyond the 4.2m VGchart numbers. So add another 800,000 copies to Halo 5 if MS’s Claims are true and it’s their bestselling Live game which is around the 20% mark.

Halo 5 being the disappointment it is to the franchise, it still keeps up with Sony’s best game which has double the User base. Halo 5 is considered on the bottom of the sales list in the Halo universe and will probably still reach the 7 to 8million milestone. UC4 will probably end up being the same.

It shouldn’t be a surprise UC4 has sold more in half the time because again it has twice the User base. Halo 5 came out on a platform gamers were neglecting and wasn’t as big of a hit compared to its predecessors yet still managed to pull out good numbers.

Until we get info on UC4s digital sales, it has not outsold Halo 5. We know Halo 5 has done extremely well with the digital side.

Halo is not the franchise it used to be. < Yeah yeah, we said the same thing when Halo 4 come out. Its sales say otherwise.

Just to add Halo 5 also has a stronger MP and is huge in Esports so it will continue to sell, might not be big numbers but will add up. Halo 4 did the same.

No, totally logical. I talk about facts not about if same game or franchaise have stable sale. Like I wrote: game will sell better on bigger instal base than on smaller, clear fact. Imagine that PS4 has instal base of around 20m, logical assumption (and following current attachment rate for that specific game) would be that U4 would sell around 2m instead of 4m on 40m instal base. There is nothing illogical here.

I already wrote that comparing sales of two games on two platforms where one platform have twice bigger instal base than other doesn't make any sense.

1. Yes. I explicitly said that it was selling faster because it hasn't been on sale as long. Which means that it's sales lead will only grow in the coming months because it has managed to sell more retail copies than Halo 5 in less than half the time.

2. I don't understand what you mean by "its been at 4m for the past couple of months"

3. Halo 5 was the best selling game digitally on the Xbox One first week at the time. which is great, but we don't really know what that means long term.

4. So essentially what you're saying is that until you are given 100% concrete proof that Uncharted 4 has outsold Halo 5. You're going to just assume Halo 5 has sold better?

5. Critically Halo 4 doesn't measure up to the other mainline Halo games, and with 5 sales seem to be reflecting the dip in quality since 343 took over the franchise.

There are people who purchase the PS4 for other games and won't purchase Uncharted 4. Even if those people never purchased a PS4,  it would have little to no effect on Sales.

So, the 10+ millions of people who purchase Fifa affected Uncharted Sales in a level for it to sell more ? 75-80% of All Halo's sales are on the USA, the Xbox One is/was ahead of the Xbox 360 in the USA. The game usually sells 3 millions first week on the USA, but it only did 800K and something with the bundles(even with a bigger install base). It did enought to chart in the next month (since the first week only had 3 days). But was unable to chart in the next months.

Isn't that strange, a game that sells 75-80% on 1 country (maybe even more) only sold 1.5-1.8 at Retail in 3 months but 5 millions worldwide ? Xbox's install base is bigger than the Xbox 360 had in the USA, much smaller  outside of it. How is that even possible ?