can't be done on the Xbox 360. At least that's what we've been told by KZ2 producer and UK Sony PR manager as some of the folks who touted this. An ex-Bungie developer says no, the 360 is capable
of Killzone 2
if they wanted to. After talking with various developers who have worked on both systems, I believe that either machine can handle each other's top end games if they wanted to.. You just have to baby the PS3 a little more in terms of memory usage and other few things but right now there isn't a game released that one can't do that the other can't. Yes, the 360 doesn't have a Blu-ray drive but if you want to go that route, it's not like you couldn't take a 120GB HDD and install the information and art necessary to run the game. For now though, the statement that a game (and it seems to be most people say PS3 games in this case) can't be done on the other system is pretty silly.