Looking at Halo's numbers, it's one of those games that does amazing in the states, bad in Japan, and Ok everywhere else(like all Xbox games)
I do beleive that Galaxy will win due the Wii's much larger user base(by the time they relese). I expect Japan will eat this game up, amnd will probobly meet Halo's sales number(in Japan alone). Of course, this isn't at launch. That would be MADNESS.







