Didn't we have this exact same thread yet just a few days ago?
And @kowenicki: wrong logic.
Pitting 360 vs PS3 absolute sales doesnt tell you much about the preferences of PS3 owners regarding the various game genres. For example GTAIV has an higher tie ratio on PS3 than on 360, Madden will obviously sell better on the 360 in absolute terms (_American_ football) but again, see tie ratio with NA numbers,etc.
By your logic: Wii kart is the best selling racing game by far, does that mean that 360 owners aren't interested in racers?