https://www.fpa.org.uk/sites/default/files/orgasms-in-women-an-online-survey.pdf

https://www.sciencedirect.com/science/article/pii/S0191886915001002

The number one factor determining wether women orgasm or not is their partners’ physical attractiveness. (Both studies above)

http://www.academia.edu/6514194/Mens_masculinity_and_attractiveness_predict_their_female_partners_reported_orgasm_frequency_and_timing

The number one factor determining wether women orgasm or not is their partners’ masculinity.

http://journals.sagepub.com/doi/full/10.1177/147470491401200507

Men with broader shoulders give women more orgasms.

Chad with no skills nor technique who just has vaginal intercourse gives more orgasms than ugly guy with perfect skills and perfect technique who eats pussy, does fingering and all of that.

If you look hot you don't have to do anything to make a woman orgasm, just put your dick in there.

If you look ugly you can try everything and still not make her cum.

Why? Easy: female orgasm is a biological method to facilitate impregnation. The woman lays down and rests after orgasm, which makes it easier for the sperm cells to deepen into her vaginal canal and later the uterus and eventually reach the ovaries.

If Mr. Handsomeguy Tallman shows up the woman's body says "That one. We need to get pregnant from THAT one. That's the one with GREAT GENES." And therefore the woman orgasms even if the guy doesn't do anything but put his dick inside her. Her body wants his genes, and it will do everything necessary to ensure impregnation.