There is a big moral difference. A 10 year old isn't "aware".

When you are 18, you are supposed to be an adult and "aware" of situations and the potential outcomes. Granted, some people are 50 and completely unaware, but we can only dumb down society so much. And this isn't to say they were asking for it or they weren't raped, it is just to say they allowed themselves to be in the situation that lead to it. If I don't want to get shot in a drive by, I don't hang out in the ghetto. If you don't want to be date raped, don't go into a guy's dorm room at 3am, drunk and coked up.