First of all: Karate Kid IS a DC character made on 1966, way before the unrelated movie. That movie had to borrow the name from DC so, please, inform yourself before judging. I've watched this movie last week and I loved it. I'm 33 years old and I usually like the more complex plot of more adult oriented stories but I dislike the concept of adult they have, including excesive gore and sexual situations. This one is a movie for all publics, fun, with a conflict based on sci fi, not so different of the plot of more "adult" dc movies. I think you may like a movie for different reasons, but on this case, those reasons are primary based on enjoyment, is fun, it creates a good tension to make you wonder what will happen, has funny lines, with a dissobedient Robín that defies Batman and a comical Bizarro that says the opposite he is doing every time. Just watch it.
You'll enjoy it.
You'll enjoy it.