Batman is semi-psychotic and his relationship with Catwoman is all manner of messed up. Superman, of course, was shown having had sex with Lois in Superman II.
But you are right in that DC seems to be deliberately avoiding the idea of showing them having sex, having had sex, or indeed wanting to have sex. Clearly the writers did, but they are bound to the will of the editors who are also part of the story telling process and have final say on what does or does not end up on the page.
Per the question, no it's not racy by teen standards. It's certainly not racy by the standards that were applied to tv episodes of Smallville between Clark and Lana or Clark and Lois.
While its flattering to be given this kind of credit
I think there is another reason as to why the editors didn't want it in there.
My strong belief is still that they don't want to have to deal with visual evidence of Superman having done it with Wonder Woman when they want to bring Lois back as his love interest. It just opens a whole complex and unpleasant can of worms about Superman and Wonder Woman being in the Justice League together after they have had sex and then don't anymore, and Lois having to deal with that.
I mean, if you were Lois Lane would you want to be compared in bed to Wonder Woman? Would any female human? Or for that matter would Steve want to be compared to Superman?