People who thought Metroid Prime 3 was going to be a huge seller were being too optimistic. Metroid Prime 2 sold poorly and personally I think Metroid Prime 1 sold on the "surprise" effect: People thought they were getting a normal FPS and were disappointed when they got something else. Prime 3's sales are disappointing, especially since it supposedly prooves the Wii is great for shooters, but there was definitely no proof that it would be a huge seller.
Brawl and Mario Kart have two things Prime 3 did not: Mario and multiplayer. Mario sells on Wii, it's proven, and I think a lot of people buy Wii as a party system. I have two friends that wanted to rent Metroid Prime 3 on two separate "Wii nights", and both had to be told it has no multiplayer. Too bad...
All that said, yeah, I think 360 will probably outdo Wii for October and probably even November (a lot of people say "SMG, SMG", but supply has more to do with whether Wii outsells 360 in November or not).








