The problem with this game (though I have not played it so I cannot make final judgement) is the complication.
It's way to complicated for the casual crowd that it is aiming towards (the physics are confusing and annoying and way too realistic for a cutesy platformer even to me as a seasoned gamer).
For a game to be successful with the casual crowd, it needs to have a simple interface and no long drawn out system to create levels.
This game will not be a system mover - it will become a hardcore gamer hit however as the game actually looks to be very promising if you're capable of something like that.
It may eventually sell over 1 million copies world wide, but there is no way it will hit 1 million in any individual territory.
I'm willing to place sig bets on the line on this one.
