I think that one is mostly a case of a film that was overbudget and badly marketed. I saw it last Thursday and it was pretty good.
The problem I have with the badly marketed theory is that the movie has done huge business overseas. So for the theory to be correct it would have to mean that American marketing people didn't know how to market the movie in America, but knew exactly how to market it in Russia, Germany, France, Britain, Brazil, Mexico, etc.
The more likely explanation (which the studios have acknowledged is the case) is that young males don't go to the movies like they used to. The question is, what are they doing instead? I believe the answer to that question is that (among other things) they are watching newly released movies on the internet instead of watching them at the theatre.