I think it will be Quantum of Solace and Fracture as well as any game that will be released in the same week as R2 and GEoW2 (i'm thinking Mirror's Edge)
PSN ID: T_Gears
End of 2009 ltd sales:
Wii = 67-68m
X360 = 38-39m
PS3 = 34-35m
Prediction: The PS3 will surpass the 360 on weekly sales after it drops to $299 on all regular weeks (no big releases).