I think four million might be a better question. That's because two million is definitely yes and even three million is probably yes. Even four million could be low (but not necessarily). You see, the game's been hyped pretty much and it's also rumoured to be better than the first one. Anyway, the game will be a success; it's just about how big success it'll be.

I think it will. I'm probably gonna preorder.

2 million - definite
3 million - probable
4 million - doubtful

I don't see why not...unless it somehow flops...which it wont.

fairly easily. This is a no brainer.

Surely.

it will sell 4.9 million in its lifetime.

I think it will be reach 4 millions, the game looks great and above all Molineaux's mouth is closed, in other words: no angry users or dissapointed reviewers.

Including PC sales as well, then 4M+ is probably.

Most definitely.