Also, what really bugged me about this movie is the physical damage these characters should and shouldn't be receiving. For example, Superwoman wails on Superman pretty hard and it seems he gets somewhat hurt when trading punches. Keep in mind: she is hurting Superman. She does the same to Batman and he's able to walk away just fine (besides breaking his leg or something - I dunno, it was pretty much forgotten after it happened). My point is that I hate it when they give Batman these superhuman characteristics in order for him to "compete" with the other heroes.
To be fair, Superwoman was presented as being attracted to Batman and wanting to "play" with him like a cat toying with a mouse. So sure, she could've punched his head off without chipping a nail, but she was presumably holding back, toying with him for her amusement.
Although it's true that that stone column landing on top of him should've broken his legs. But that's about par for the course in comics and animation.
Well IIRC isn't Superwoman powered by Kryptonite? If so, then yeah Superman is pretty much screwed if he gets in a fight with her. As for Batman, he's got no super powers, but he knows how to take a punch, how to get his ass kicked. Superman is so used to just taking the punch and not worrying about it doing much more than just staggering him. He can get knocked down but he's not "hurt" per se. No more than bumping your knee on something and going "OUCH!" even though it didn't really hurt THAT bad but it was a surprise/shock.