Modern Warfare 2: Most likely will come very close, but it won't be a major increase/decrease...I think dropping the COD name is a mistake but Activision will make sure to advertise this game in such a way that everyone knows its a COD game
Halo 3 ODST: It will probably sell around 5 million, but no where near as much as Halo 3...Halo Reach will obliterate sales though when it comes out
Splinter Cell: Better marketing, bigger user base, huge hype ---> HUGE SALES
Uncharted 2: It will get off to a good start like KZ2, around 600-700K in it's first week and will most likely end up doing around 3 million or more. The game will sell even more if it's bundled and if it turns out to be as amazing as it looks then it will be a system pusher...this game, along with MGS4 are the main reasons to own a PS3.
Forza 3: HUGE INCREASE, the game looks phenomenal and MS won't leave any stone unturned to market this one like mad, this is the GT of 360 owners.
AC2: I know many people were disappointed with the first one but I have a feeling that this game will still outsell the first one by a significant amount.
