I think the only way to really know the answer to this question one would have had to live life anatomically as both a woman and a man.
I once heard a woman say, "If you have an itch in your ear and you insert your finger to stop the itch....which feels better your ear or your finger?"
There has also been documentation which indicates many women can have multiple orgasms and if the "G-spot" is stimulated they may have orgasms more powerful than any man.
On the other hand if sex for women was that much better than sex for men there would be a lot more male prostitutes in demand to service them as well more strip clubs, porn sites...etc
Based upon money exchanging hands for sexual services I would be inclined to believe that men either enjoy sex more than women or they have less control of their sexual urges!