Sometimes it's not the 7 in particular that makes people upset but rather the reasons and the reviewer. Again, Gaming reviews are not perfect. Sometimes a game comes out and it gets good score (8-10), but than maybe one or two reviewer give the game a 7 because apparently the game wasn't halo or because he could not figure out that you had to unplug the controller and plug it in slot 2 he gave up and gave the game a 5. Or with Heavy Rain for example with Destructiod it was, "errr it's not a game nor movie what is it?"
A lot of times the score doesn't match what is written in the review as well. "Great game, Great graphics, gameplay is awesome, sound is amazing, Multiplayer is best there is, arguably one of the best game this generation, we give it a 3/5". Which brings up a lot of question marks as to what you are actually reading.
In the end reviewers are just like us, they are biased at times, get frustrated, let the hype get to them, that they let all that affect the score when it doesn't have to. A game that is overhyped and when it comes out is not as good as everyone thought but is still a good game doesn't mean the game deserve 6 when its still a playable and good game. Bioshock 2 is a good example. It was hyped, not overhyped, people thought it was going to be better than the first. Turns out it wasn't but yet it was still a good game and got an 8. But other games would get slaughter.
Personally if the game deserves a 7 or if the reviewers writtes a good review as to why the game got a 7, than it's believeable. Not that I ccare because personally I do not care for reviewers anymore.
