What would your company do if it got an unrealistically high review? It is disingenuous to leave those out there. You mislead people. People buy your product based on reviews. If you feel it is your duty to provide clarity to a low score, you should do the same for high scores. If a client is misled and thinks your product cures cancer thanks to a review, you should probably say something, otherwise you face the wrath of angry, misled clients.
Also, what "features" does madden have that would possibly be unclear at this point? It's football. The lowest score was for gameplay. There isn't really anything that is difficult to understand there.