In Japan it will never even sell 1 million lifetime, even though it could sell over 500k first week it really won't have any legs at all.
In America it will likely have better legs than Japan, but also a pretty big first week compared to old titles (perhaps 700k?)
In Europe I have no idea, I would guess higher than America in total sales (say America X 1.3) but first week will be smaller.
So in total the first week sales will not reach 2 million. and will be more like 1500-1600k, which will probably be only half of what the PS3 version of GTAIV will have made. (once Europe and Japan numbers are added)
Lifetime world totals will probably be similar to past games, maybe a bit more, so 4-5 million.








