Neither movie is even remotely near the mindless entertainment label. They are far more intellectual than any comic book movie that comes to mind and both were incredibly well written and planned out. I'm guessing that you're trying to tie these into the Burton and Schumacher movies, which is a big mistake. They're not connected in any way other than the character names. You should give at least one of them a shot some time, you may be surprised. Worst case scenario, you've lost 2 hours. It can't be any worse than watching a Bills game.
As for the bolded line, take out the costume part and isn't that what 90% of movies are about?