Well, I hate to sound like a supreme court nominee, but male/female trysts vs female/male trysts, I would look at on a case by case basis and not generalize that all males end up in jail because of some generally accepted concept. Generally, yes, I agree that there is and should be (cultural) differences, however there is much more to it simply than the sex of the offender.
Of course there is more to it than that, i didn't mean to suggest otherwise. That doesn't keep us from arriving at the general principle though that an adult male's sexual adventure with a young girl is worse than an adult female's sexual adventure with a young male.
That there can be numerous exceptions is obvious and should be handled case by case, but that don't undermine that general policy concern at all.
I can't continue this now, sorry: galpal is flying through Las Vegas on her way to PA and decided to stay here overnight, so I have to go pick her up at the airport and have fun with her this afternoon/eve. I'll pick it up tomorrow morning after I get her on her plane, if you like! Nice chatting!