Well, most rape occurs to women, so yeah, it's easier for women to cry rape. That doesn't mean it's okay to do it falsely.

What do you mean, a person is responsible if she changes her mind, even in an alcohol-induced state? Are you saying a person has no right to stop sex once it's started? While I'm not saying it's a nice thing to do, and one certainly shouldn't let it get that far if one doesn't want to do it, a person still has the right to stop the act. It's rape if someone forces you beyond your asking them to stop. You can consent without really being sure, and then you realize you really don't want to do this...perhaps you suddenly grasp just how at risk you are for disease or pregnancy, or simply don't want to lose your virginity, after all...and you have absolutely every right to change your mind.