Hasn't been my experience, generally speaking. The women I have dated have wanted it more often than me. I would have loved to get it 4x a day back when I was 15 years old but it's been a very gradual downward trend since then, to the point where I'm great with once or twice a week now. I date women 10+ years younger than me, and they say women reach their sexual peak in their mid 30's (not sure I believe that or not) so maybe that has something to do with it, but even the early 20's girls I've dated have been extremely horny.
You know, a better study would be to ask women how many times they would want to have sex in a week, if they were dating the man of their dreams. Because most of us with game knowledge are going to be receiving that level of treatment with women because we know what buttons to press.