If that is representative of the actual difference between the two games then colour me at least moderately impressed. My reservations are; the screen shots are from two different sources, there are only two of them and they do seem to be a different times of the day.
It seems on the face of it that Criterion has done the right thing development-wise and is now doing the right thing promotion-wise.
Unless it all falls apart with the reviews, I'm on board.