First, I don't know how men are forced to have sex as in sexual intercourse with women since I would think an erection shows cooperation. It sounds like a situation where a man could get excited by the woman and in the particular situation; he didn't want to do it for some reason, but was pressured into it or something like that. Or by "sex" the respondents mean something less than intercourse.
You can see both gender and sexual orientation at work here. Guys--straight and gay--are less than 50 percent of the population but commit over 90% of the sex crimes. No news there. Homosexual offenders commit more acts on male victims than straight females even though they are a tiny group. Lesbians attack half as many victims as gay men, but then again they are roughly half as prevalent as male homosexuals.
Of course I'm oversimplifying because there are people who commit same-sex assaults who say they are not homosexual. This fact has been observed in prison, but it is not expected to happen much in free society where straights have access to members of the opposite sex.
I'm sure someone will comment that sexual assault has nothing to do with sexual attraction, but we HBD-ers don't go for that PC nonsense.