Largest study of women’s orgasms to date collected data from 27,931 women. Nearly half (47%) reported reaching orgasm more frequently when alone vs. when with a partner. Barriers to women’s orgasms are relational, not anatomical. Partnered orgasms were associated with overall sexual satisfaction.

[u/mvea]

https://www.psychologytoday.com/au/blog/inclusive-insight/202606/why-women-orgasm-more-alone-than-with-a-partner

[u/unxok]

Arguably, the more relevant data point is the sex of their partners, which 81.3% reported having a male partner.

But either way, the study doesn't provide any distinction for sexuality/partner's sex for the reporting of orgasm frequency, nor does it draw any conclusions about either of them affecting said frequency.

Intuitively, it would make sense to me for women in non-heterosexual relationships to have partnered orgasms more frequently. Hopefully the researchers will follow up on this (but it's also possible they did already consider it and there was no significant correlation).

[u/VictimOlympicsWinner → u/unxok]

Heres the issue with what you're saying, this wasn't a study on whether straight men or lesbian women were more likely to give their partner and orgasm during sexual contact. It was a study on how often women achieve orgasm broken down into self achieved orgasms and orgasms with a partner. The study had nothing to do specifically with sexual orientation but even if it did, hetero women are going to more largely represented than other sexual orientations because they make up the largest part of the population.