Except in countless cases where one person has been less drunk than another, and has been charged with rape as a result, but okay.
That being said ...
Nobody is really to blame for it (or both parties equally) [...]
This is true, which is why I do not think cases of "mutual rape" should be prosecuted, because both people are equal victims of the same crime (not that this has stopped prosecutors IRL, who have CONVICTED underage girls of being "child pornographers" for posting nude pictures of THEMSELVES online).
Point being, though, you're talking about an incredibly squick-worthy violation of both people, that's being played for laughs in what is ostensibly "all-ages entertainment," but then again, since we've already had the middle-aged villain impregnating both the barely-legal girlfriend of the hero and the ex-fiancee of HIS OWN SON, I should wonder why Quesada is even pretending that this is meant to appeal "to the kids" anymore.