So where can I buy God of War , Ratchet & Clank or Uncharted for my PC ? 

@krik,

Look I'm not trying to piss in your cheerios here man. I think the comparison is interesting, I just think you presented it in an extremely slanted fashion (deliberately or not) and as you probably noticed I have no problem pointing that out and highlighting what I think is a better comparison. You don't have to use it and you don't have to like it...I'm really not concerned with changing your mind.

@ils411

Including launches for the 360 is just as useless. The point is that a launch period is not a sales spike we will ever see more than once and if you want to compare sales levels it just skews the data upwards for the newer consoles.

I fully agree that there are issues with considering sales of the PS2 when the PS3 isn't available, but thats not what I was saying the comparison should be so your argument is kind of moot. Your the first person to mention this idea of a sales comparison entirely during a period that only one console was out in that region. As I said, the best method is to pick a date after the PS3 is out in all regions. You can even use krik's method of doing it per region if you move it up by about 2-3 weeks in each region to avoid including outlier data from the launch.

As evidenced by your last point in your post I think we actually agree here. I think the one thing you missed was that my last post wasn't meant to support the idea of using the first launch date for a WW comparison as that would still include some of the same problems anyways like launch spikes etc...

@Sqrl

first, true, launch spikes can only be seen once and yes it does give the newer console a nice boost in sales when comparted to older consoles and i'm not contesting that. the point is when krik compared the x360 with the ps2, he considered sales from launch which is what he also did for the ps3. so basically, its a fair comparison for both the 360 and the ps3 since his constraints are the same, though not so fair for the ps2 which has no sales spike due to launch sales but what it does have is product recognition.

2nd, my bad, i didnt read your post thoroughly yesterday as i was switching from working to goofing off and then working whenever someone passes by my workstation. and yes removing sales spike due to launch would yield a more reliable and better comparison. and if you want to take it one step further, we could also consider stock availability, game launches and new sku introductions though that would be a royal pain.