I think it would be fairer to compare sales of similar, if not same genres. Unfortunately, the Wii doesn't have any FPS' that can even come close to Halo. That being said, I do think both will eventually outsell Halo. As darconi stated, more FPS' will come and steal some of Halo's thunder. SMG and Smash Bros. likely won't even have any real competition within their genres. Particularly on the Wii. Unless Street Fighter IV comes out like has been hinted at by Capcom. Then it might give Brawl a run for it's money. I expect even then Brawl will be one of, if not the highest selling single game this generation.
Another factor is that in Japan the Xbox is selling dismal numbers and, barring divine intervention, will continue to. This will strongly impact Halo 3 lifetime sales in comparison to SMG and Brawl.
I know you believe you understand what you think I said but I don't think you realize that what you heard is not what I meant.
