True.

However it should be mentioned that rapes by women are even less likely to be reported than rapes by men, especially if then victim is a man. Men are even less likely to rapport rape than women.

That being said it is a great disparity. But there are still women rapists out there, they do exist. Yes they are the minority, but that doesn't make them invisible. I know someone who was essentially rapped by a woman once, he was at a party and she roofied him and he woke up with her on top of him. But he refuses to say it was rape and just says it was a 'uncomfortable enounter.' Still yes, your point is taken, the vast majority of rapists are in fact men.