360's got the network: i may not care that much about online play, but it would be nice to have (especially with the way they handle the friends list) for when you don't quite know what you want to play, just find a friend and join 'em
PS3's got LBP
PSP's got Loco Roco, as well as Sonic Rivals
EDIT: PSP also has that new Prinny game. Looks awesome
Monster Hunter: pissing me off since 2010.