PC's get 64 player matches. 2 and a half times more players. I don't know why that is the case case. The PS3 can somehow pull off 150 in one of their games. Is it Live or is it the hardware?
Either way, I won't buy a next gen console that can't support 64 player Battlefield matches. So make sure the Xbox 720 (or whatever you call it) can do that.