Since the biggest source of non-consentual sex is alcohol-driven, we are safe to say that most "rapes" ocurr when people are drunk. Males drink in average far more per body mass than females in a regular party night, therefore males are much more likely to be more drunk when having sex. Since one cannot consent when drunk and males drink more and get drunk more often, it's safe to assume that men are more likely to get raped than women, by far.