alt Hacker Newsyes! Apparently the rate of penile and throat cancer occurs at only half the rate in men as it does as cervical cancer in women, but the harm caused by the male versions of the cancer are worse, so in actual fact it may overall cause more harm in the male population.
My bet is that it has to do with the mechanics of receptive vaginal and oral sex, the penis just reaches deeper and causes more lesions. Compared to insertive vaginal sex and oral vaginal performance, those lesions would be less frequent and on more distal parts of the body.
If the rate is 50%, I'd also expect MSM to be overrepresented there, which would make the difference of risk between heterosexual sex even more imbalanced.