If GTA4 isn't a 10/10 game, why did it get reviews like it did?

[richardhutnik]

Metallicube said:
I think it's pretty obvious that reviewers get paid off to jack up the score. Reviews really mean a lot from many gamers.

GTA4, while a fun game, is definitely not a 10. It's a 9 at best. It had plenty of flaws in the game, awkward controls, and had pretty bad replay value.

So, exactly how much did RockStar pay the review of this review, that game the game a 10/10?  I never heard of this reviewer at all, and they go off and give the game a 10/10.  Others in this thread also feel the game deserved a 10/10 to.  So what is up with that?