If there is any Switch bundle it will be MK8D, not Zelda.

I agree 100% with this. MK8D makes too much sense

Nothing stopping them, except that it probably wouldn't be a profitable move.  If they don't, which is likely, then it would be a pretty worthless comparison.

Little late, but just in time to be on the 69th page.

In terms of sales, Zelda will win. Horizon is coming much later into the PS4's life and western AAA games have a problem of selling really fast and then crashing (a few exceptions like GTA). Nintendo game's tend to keep selling. Zelda will sell throughout the Switch's lifetime where Horizon won't. You can see this on the UK charts where Zelda is holding its place (but feel free to post if you have something to the contrary. I haven't been able to find a ton of charts TBH). You also have Japan where the Switch will sell very well.

Additionally, Zelda will build an open-world game constituency that PS4 will not have. Zelda will boost sales of Skyrim and Minecraft, more open-world games will come to Switch, which also causes Zelda to sell more.

I really doubt the elders scrolls 6 and many open world games not published by Nintendo are coming to the Nintendo Switch. Take Darksiders 3 for instance which shares way more similairities with Zelda than Horizon is announced in 2018 for Xone, PS4 and PC. Yet there is no word on a Switch version. Porting games that are primairily designed to run on a PS4 and after that the Xone on a bit lower resolution are not simply portable to the Switch in 720p or 576p. The power difference is almost tenfold between PS4 and Switch undocked. I don't think we are going to see developers make a jump to make the Switch a primairy platform. Don't forget the Wii sold great and TP sold great yet third party touhgt it was too hard to port their games. So unless Nintendo is going to invest in open world rpg's themselves or convinces Square to make AAA exclusive open world games I don't think third party support will help the legs of Zelda. In general Zelda sells the most in NA and not Japan.

Contrary Uncharted 2 sold great for years after it was released and so did GT5. This gen alone The last of US remastered and the Uncharted collection sold above 5 million units. Sure a big incentive came from the holidays, but they still tend to sell 20k weekly. Destiny also sold pretty well for quite a long time. In genral front loaded sales are good for third parties since they can sell those games at full retail price. The reason why they drop in price is because AAA releases on PS4, PC and Xone are a monthly occurance and in the prime months a weekly occurance. 

I don't disagree that some games have sold very well on PS4 and have sold for a long time. If you look at the NPD data, you will see a lot of games remain on the chart. But software sales are down in total compared to 2009 (three years in Generation 8). People are buying more of the same game. This is how you have GTA 5 have the insane number it does. Consumers are investing in a few games. I won't go too much into it since it's a bigger issue, but some games do sell very well, but a lot of AAA fall pretty fast too. Nintendo games hold their value. Despite Wii U and 3DS weak sales, their software keeps selling.

Now, to your first part about open world games. What you have to understand is console will have constituencies. Some games will sell better on some consoles then they will on others. Take the Wii vs the 360. Shooters have always sold well on 360 but Kinect games never did (outside of the first ones). Those same kind of expanded market games sold incredibly well on the Wii while shooters never did (despite many companies trying). 

Its an understatement that Zelda is a success. The Switch version has sold more than the system itself. The biggest game bringing people to Switch (outside of Mario Kart which always does well) is Zelda. After playing Zelda, people will want other open world games. So games like Skyrim and Minecraft will do very well. With open world games doing well on Switch, more developers will make open world games for Switch which will draw more people to Switch which will make Zelda sell better. 

And I don't think porting will be a problem. The Wii got ports of some 360 and PS3 games. If anything, it's easier to port to Switch now and it still an HD system. If anything, it would be more akin to changing your graphic setting from High to Medium on a PC game. The market forces will be a bigger driver. You will see more ports in 2018 when Skyrim sells well. So, Zelda will do better as Switch develops a constiuence of openworld games that PS4 wont have. 

Already own a Wii U.

What else can you say?

From the beggining Those predictions were completly out of reach and reality.

And full of fanboyism if you ask me.

That bolded part is like saying that in christmas people will buy gifts. 

Let me add something in your time machine,,,,,,this prediction. 

NEVER a Horizon Game will have better META than a Zelda one. (Triple AAA production of course)

You cant argue against him if your not applying the same rules to yourself bruh

Zelda is going to have giraffe-like legs and sell great for years to come regardless of whether Switch gets a lot of third party open world games, to be honest. It's one of those games like Halo on the original Xbox or Mario 64 on the N64, where a big chunk of Switch owners will buy it because if you're going to buy the system, you may as well get its quintessial killer app.