I do not track GB scores to see where they skew historically. admittedly. They aren't hacks though.
I like gleaming pro's and potential con's from their reviews.
It was nice to know that there are a lot of covenent to fight and that it feels a lot like previous halo games.
I think he scored it a little low, but I think he had different expectations for the game. (And he was fair because he told you that, so you could see his POV) Anyone who reads that reviews can filter those things.
What is nice is that he still made it clear that if what you are looking for is "X" its still going to be a great game.