The orgasm gap is real, and it is not about anatomy
It closes almost completely between women in same-sex relationships.
In a survey of 52,588 adults, 95 per cent of heterosexual men said they usually or always orgasmed with a familiar partner. Heterosexual women reported 65 per cent. That thirty-point gap is the finding most often quoted, and usually explained as a difference in how bodies work.
The same study is the reason that explanation fails. Lesbian women reported 86 per cent — twenty-one points above heterosexual women, with the same anatomy. What separated the groups was behaviour: the higher-orgasm groups reported more manual and oral stimulation, more time, and more explicit communication about what they wanted.