you can quote me on this one GT5 will not own Forza 3 but rather DESTROYS FORZA 3!
GT5 is the Most Realistic Simulation you can get! Even Nascar racers enjoy the game, I don't see any Publicity on Forza 3 lol
GT5 sales will kill Forza 3, I have no idea whats your friend on about but GRAN TURISMO has a very powerful branding among racing gamers