I think that this year, in Japan, besides DQIX obviously, the best selling game is gonna be between any of the Wii series games.
Besides those, Galaxy, Brawl, Crisis Core maybe. I believe Dissidia isn´t gonna be that big as some think. 500K maybe, more less like Rev Wings levels.
DQIX, who knows. The fact that is has 4 player co-op may multiply its sales from previous instalments.
Probably bigger than NSMB lifetime.
Oh, and if MGS4 is released in 07, expect 400k sales max in Japan







