It's one of those crimes where even if you deny it, it's not perceived as actually denying it but more as the circumstances were different than what's alleged. The bar isn't set at no it was consensual, but closer to there was no sex. Which usually isn't what the accused can say.
"There is nothing hindering women’s ability to volunteer and serve, so there is no need for this dangerous and unnecessary mandate contained in the NDAA.". Because you know, men surely are being hindered a lot to get into the army...