We have to critically think when evaluating studies. The first thing to look at is the methodology. If this is a survey type or interview type without validating questions, then this study is flawed to a huge extent.
Several studies indicate that majority of women have yet to experience vaginal orgasm although a huge percentage already experienced clitoral orgasm. Some studies go to the extent of using electronic equipment such as MRIs and so on to measure women's orgasms. Some also have validating questions to determine if the actual reported experience is congruent with the indicators of vaginal orgasms.
Several years back studies portrayed a huge difference in the sexual responses of men and women. These studies are mainly flawed because these are the survey/interview types without validating questions. Then a woman researcher placed measuring devices inside women's pussies to check if what they say is the same as what their pussies are saying. Surprise!
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Women actually get wet from watching porn even though they insist they do not.
Scientific studies are better though than purely anecdotal sex books like Sex God Method by Daniel Rose. If you don't have the necessary skills and practice, say, to desensitize your penis so you can fuck for a longer time without premature ejaculation, then no amount of throwing the girl to the wall and banging her standing up will give her that elusive vaginal orgasm.
Separate the marketing hype from the gems. Check the methodology. Test on field. Practice and be logical about these things. In the end, that perfect facial symmetry does not stand a chance against a PUA who knows how to fuck a girl properly and give her 6 or more successive vaginal orgasms.
A woman who had her first vaginal orgasm and realizes she can only get that from you will do your laundry, cook your food, clean your room, and loan you money that you can pay when you're able without interest. Badass pick up and bedroom skills are better than any facial symmetry.

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Approach. Open. Escalate. Isolate
Here are my two essential rules on texting that will save you tons of time and money:
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