This is just my opinion, but I think that Gamespot really sucks at rating Xbox games, including other ones.
They only give the really brutal games high scores. Example: Oddworld got 7 out of 10, Amped got something like 6.9 out of 10!!! Where here at XBA, it's one of the top games. Even Shenmue II got 7.3 out of 10 or Morrowind (one of the best games on Xbox) got 8 out of 10. I mean Halo got pretty high, but it was pretty violent comparing to other games and it was game of the year after all. Their reviews are well structured and detailed, but when it comes to actually giving the game a score, they really suck there at Gamespot.com. Personally, here at XBA, it's much better!