i think that the game that will kill both the 360 and wii is:
Super Halo World !
Exclusive to Ps3, Collaboration between Bungie Naughty dog insomniac Tetsuya nomura and Kojima productions: Greatest graphics ever, it will be a trilogy, has online capabilities(Home, Torphies), uses PS3 threemote :), and when you buy it you will get a PS3 for free ! SWEET :)