I doubt it will shift many. Its exactly an example of the sort of quirky, experimental and hopefully very fun stuff that first parties should be supporting - but it likely is not mainstream.
I think the game itself will sell a couple of million copies.
It will likely get a metacritic rating in the low 80's. If for some reason it received universal acclaim it might shift consoles.
starcraft - Playing Games = FUN, Talking about Games = SERIOUS