Both Wonderwoman and Kusanagi are modeled with apparent sex appeal by male authors. Could they really still be good role models? I ask this as someone who don't know much about either comics.
Of course they can. Imagine a hypothetical comic with characters of both genders who are all sparklingly excellent role models in the way they behave. Now imagine that this comic was drawn by people who designed all those characters to be blatantly, panderingly sexy -- a fairly common situation, since sex sells, and cross-demographic appeal makes commercial sense. Does this make the characters poor role models, in spite of their good personalities and deeds? I doubt it.
These are not hypothetical comics. If the characters are primarly tools to entice male audiences, then they are unlikely to also serve as good role models.
The creation of Wonder Woman is actually pretty interesting -- it was done in collaboration with the creators wife, and she was modeled somewhat after a woman they were in a polyamorous relationship with. She was also explicitly designed to be a good role model for girls.