looks like your wrong...
Forza > gran turismo since launch
Mag isn't as big as it was supposed to be.
Halo Reach will once again sell millions.
The Biggest reason Sony cannot win is the way games are made... hate to break it to the fanboys but the process goes a little like this.
lets make a game for PC, 360, or multiplatform
picking any of them they develope the game for 360, then port the game to PS3 if at all. any game that is multiplatform is superior on the 360 with very very very few exceptions.