The problem is you can't view reviews like "How much should I buy this game, on a scale from 1-10?" It should be read as a persons take on the game. You should cross reference different reviews to get something little less bias. Then you need to consider that some game reviewers like Harvest Moon, TES:Oblivion, and other titles you may not like.
The Captain America game got bashed scoring in around a 6 I think. I think the game is fun. I went in wanting a comic-bookey game and that is what I got, I was pleased. I think for what it was trying to do, it deserves an 8-9. It wasn't trying to be anything more than the fun super hero games I grew up playing borrowing some mechanics from Arkham Asylum. That is what I found out from all the reviews and developer releases and that is what I wanted from it.
Personally, I find game reviewers pretty accurate. I don't care about the numbers or the "this is why this sucks" lines. All I need to know is the facts. Reading a review, I am always trying to take out the bias lines.