It seems almost every game on XBOX 360 that receives a good amount of hype before its release and doesn't live up to it gets the same unlucky review score by Gamespot. I can't believe how many 6.5s I see when I browse the entire list of 360 games available. To me this number doesn't mean the game is fair and worth playing. When I see this score on a game's review I immediately turn away without considering playing it.
The reason for this is all the overestimating reviews given to games just because they're destined to be great even though they aren't. For instance, since Halo 3 was rated 9.5 when it should have been 8.5, now I feel that any game that gets 6.5 is really a 5.5 caliber game with a sympathetic tilt.
I think 6.5 is the Curse for 360 on Gamespot because it seems to be the rockbottom end of a black and white rating system. "This game's either good or it's bad, it's good or it's 6.5." If a game (like Alone In The Dark, Jericho, Army Of Two, Timeshift) receives a lot of hype and disappoints, it always gets 6.5. Even if it's actually worth playing (like Timeshift), it's still rated at the bottom of the trash dump of 360 titles just because it didn't deliver at its full potential.