You can't just rely on reviews, everyone's opinions are their own. Reviews do help but I've found myself really enjoying games that got bad reviews. In addition, you have to factor in the unrealistic expectations that came with this game.
As I said, after what happened with Mass Effect 3, the long development cycle for this game and all the hype leading up to it I think it's incredibly hard for the game to live up to expectations no matter how good it really is.