While it’s true that there are fewer original female characters, there’s still a decent #, and there’s ALMOST NO male counterparts to any of them. Wonderman is an oblique Wonder Woman reference if a reference at all, one is Marvel, the other DC. Really I think it’s sexism. It’s one thing to have a female “copy” of a male character, but I think a male “copy” of a female character is perceived as nigh unthinkable. The only one I can think of is tenuous – Quentin Quire copying the look of Dark Phoenix. ( I think really the subliminal hurdle is : What male would copy the look of a woman?) Until the gender switches go the other direction (female characters becoming male), I think the comics medium is still profoundly sexist in ways it doesn’t even understand or acknowledge.