IGN US, GameInformer, and Gamespot are the most corporate videogame critics out there. If you want reasonable reviews go to Giantbomb, Kotaku, or 1up.
To me it seems like people who review this game without knowing and enjoying the source materials keep giving it low scores. And to be honest, reviewers can't seem to get their heads out of their "Modern Warfare 2" asses when reviewing first person shooters anymore. *cough* overrated.