[Mr. Wooden Alligator]

I can't help but recall how people responded when the picture of Talia leaked in the Summer of 2011. Then Nolan made his comment about other villains being watered down versions of the Joker. I think Nolan's comments and choice of villains rubbed some people the wrong way. No one expected Bane and Talia; Penguin, Catwoman and Riddler were all very popular choices in the months before Nolan announced Bane and Catwoman as the villains.

Then, as Joker says, some may just not feel the movie measures up to the standards set by the previous two. The people who just "slam" it without giving a reason are likely looking to see if the Batboard folk live up to their reputation.