I must agree--in those iconic shots, you don't even get the edges of Superman's body. Yes, it's all his chest, but it's not ALL of his chest.

It's kind of like saying [ ] look, between those brackets back there there I have a segment of Wonder Woman's bare bosom drawn! What? Not erotic? Why not? It's part of... you know... her chest!

The way in which something is drawn and what is included and disincluded has a large effect on impact that you must take into account.