Yup, way too many high scores from reviews these days. So much so that a 7 out of 10 is considered a bad score.
I also think that the difficulty of the game may be a reason for the mixed scores, a lot of reviewers were expecting a Left 4 Dead or CoD Zombies type of game rather than an old-school survival horror game despite the fact that Ubisoft made it quite clear right from the beginning that it was a survival horror game.
I reckon it's probably gone gold by now with the digital distribution sales included, I'd say a sequel is on its way already. Can't wait!!!