As much as various fans want to justify, and make up fanciful ideas that the PS3 version will outsell the X360 version, it won't.
Will it eventually be close? Yes. But I just don't see *how* it's going to happen.
US: Clearly, the X360 version is going to sell better. Will the PS3 have a better attach ratio? Sure, but so did Call of Duty 4. COD4 on the PS3 had a better attach ratio, but did it matter?
Sales prediction: 7,000,000 Xbox 360:5,250,000 PS3
Europe: Everyone believes the PS3 version will sell leaps and bounds better, but how often is that happening in Europe, for major shooter-type games right now? Last I checked, the closest comparible, Assassin's Creed has sold about 1.1:1.0 in Europe, and I tend to think that GTAIV might fare a little better on the 360 side of things ala COD4, which sold about 1.15:1.0 in Europe, in favor of the 360. The 360 version will win the first month or two, but I do agree the PS3 version will eventually lead, due to sales momentum of their system.
Sales prediction: 3,450,000 Xbox 360: 4,000,000 PS3
Japan: The only real place the PS3 version will outsell the X360 version by leaps and bounds, if the X360 version even gets ported. I don't think it will. But it might.
Sales prediction: 60,000 Xbox 360: 250,000 PS3
LTD Sales Prediction, Worldwide: 10,760,000 Xbox 360:9,500,000 PS3
LTD Total Sales Worldwide: 20,260,000 Units. Not including PC sales (2.5m+ Worldwide)
Back from the dead, I'm afraid.
