@mariozeldametroid: any big FPS on 360 will outsell any big game on Wii for the next year from today (exept Sports and Play). It's because of it's more focused userbase. Wiis userbase varies much more than 360:s. You could think that there are always some Wii owners who are interested in one game type, but theres no game that would move the majority of Wii owners to get that game. I see potential surprise in Corruption, and potential flop in SSBB (why is that, you may ask. It's becase Brawl doesn't use the Remotes special features in its main game and these features are pretty much the reason why people buy Wiis). Btw. The biggest selling GC game was Mario Kart DD. And the diffence between XB and GC was 2-3 million units sold.

Prediction:  Halo 3 > Halo 2, MP3 > MP2, but Halo 3 outsells MP3 at about 5:1.  And Killzone 2 will bomb, mark my words, unless it is somehow light years beyond the first in more than graphics.

I don't get why people are listing Killzone as a "killer app" for the PS3. The first one was very mediocre and generally received ho-hum reviews from everybody. Maybe the second one will be better but I wouldn't hold my breath. 

Because Sony fans are desperate for a Killer App that will sell their beloved console.

The killer apps are there (GT, FF) but they're too far away for their happiness, so they make up new ones. 

If MP3 has online multiplayer (and it's good) then yes, I think they more than stand a chance to keep up with Halo 3, but that's only with multiplayer online. Multiplayer was what sold so many copies of Halo and Halo 2. MP3 NEEDS it if it is to have a chance at competing.