You seem to be looking for the answer that the Wii did poorly, and SMG did poorly.
I honestly don't agree. I think it did fine, and it'll keep selling well. It didn't sell like expected, but like I said, Japan seems to be casual/handheld now.
I'm not trying to defend Wii or SMG or whatever...I'm saying why the game might have sold under expectations...and why I don't think it matters for NA and Europe.
LEFT4DEAD411.COM
Bet with disolitude: Left4Dead will have a higher Metacritic rating than Project Origin, 3 months after the second game's release. (hasn't been 3 months but it looks like I won :-p )