
Here, while superman has blue on his stomach and legs, he looks like he has painted on clothes. It's not realistic, and he is depicted as very muscular and masculine. Neither costume here is overtly sexual, other than showing very fit bodies.
Zan and Jayna are dressed about the same.
No real difference here in SpidermanIs the sexism in superheroes thing overstated? I think so. I think that all superheroes are depicted as physically appealing or of extraordinary physicality. Take "He-Man" for instance. He is mostly naked, and hyper-muscular.

I think the whole "if male superheroes were dressed like female superheroes..." line is contrived.