I don't think Kirby and DKCR will pull in the casual market like NSMBW did. Also, the casuals just bought a multiplayer 2d platformer last year, which most probably havn't even finished (I havn't either) so Kirby and DK will look like more of the same but not as good.
They will sell well to the Nintendo fanboys and sell in numbers similar to previous installments.
My guess
Kirby:EY - 2 - 3m
DKCR - 5 - 6m
Wii Party - 20m







