Lol no back-draw ftw!
But OT: As a lot have said, Killzone was dubbed "the Halo killer" and after it was released I never heard anything about it ever again.
I really never saw what was so special in the Halo series that warranted such a high score with other games which I felt were much better getting lower scores.
Really, ratings are merely opinions, it doesn't show how much people will like the game, nor how much people will play it. It is a glorified opinion.