No it isn't about games. Every game that's exclusive to PS3 has been supposed to help it and none of them have done anything. The 360 had almost nothing exclusive this holiday besides Fable 3 and Kinect stuff and it's still beating PS3 and Wii. These are just the lame excuses PS3 always gets.
GT5 - botched release, subpar reviews for a GT game, no longer a big deal in the U.S.
LPB 2 - looks great, not a system seller, but it is the type of game that I think would sell well for the holidays and boost PS3 sales.
They wouldn't have beat the 360 no matter what either way. Kinect is doing well, it's the COD machine etc etc.