Which game will sell more first week WW? Forza 3 or Grand Turismo 5?

[DragonLord]

Gran Tursimo 5 will definitely outsell Forza 3.  It's just too popular worldwide.  Forza may sell more in the US, but not worldwide.  I'd expect the ps3 to have a pricecut before GT5 comes out too which will be a good reason for many to pick up a system.