It's still quite a difference but it's coming into perspective. The difference lies in a few PS3 games that Edge seemed to really, really hate. When you're dealing with less than 20 games, that can make a huge difference.
To me, the most surprising thing on that list is the Resistance games and Killzone. While I agree that they're rather unimpressive compared to some other shooters, when compared to the stupid-high score given to Halo 3 and the good score for ODST (meh, quite a mediocre game by Bungie standards), you'd think they would have fared a little better. That part makes no sense and I'd like to see who wrote each review.
On the other hand, Edge only gave Gears an 80. I don't think this is really a bias but maybe one or two reviewers are far more harsh on game ratings than their colleagues. When Gears gets an 80 from the same magazine that gives ODST a 90, it has to boil down to individual reviewers. I don't know of a single person who would agree with those scores when compared to one another.
Or check out my new webcomic: http://selfcentent.com/
