The idea of Superman not having a good grasp on fighting to me sounds lazy. I mean it's not his thing (do they even pretend Batman likes it?) but he does it so often with such high stakes that he should know what he's doing above the average person. I can't imagine him being just average (like less than an A level college student) with subjects like physics or psychology by the same token. To me the closest he gets to being a regular guy with powers is at least being as invested as a cop.