Just for the record Gran Turismo is a bigger franchise than Halo. This gen Sony have made lots of new ip's rather churning out sequels. Of those new ip's Uncharted 2 looks like it could be a 5million seller. LBP has massive legs and looks like another premier franchise. And lot of 1, 2 million sellers. And established ip's which will start hitting next year. MS put all there efforts into 1 or 2 titles with huge marketing campaigns etc while Sony instead go for the quantity/diversity as there killer.