it'll defiantly sell atleast 7 mil but i dont think it has much chance of getting to 10 million seeing as no ps3 game has reached that and i dont think GT5 will be the one to do it
End of 2012 prediction:
xbox 360 : 73-75 million playstation 3 : 72-74 million wii : 104-105 million
Most hyped for :
Bioshock: infinte, The Last Of Us, Alan Wake's American Nightmare and Agent