You might be better off discussing this in askmen, since they’re more likely to have had access to more vaginas. As a hetero woman I’ve only experienced my own orgasms so I can’t tell you where the skew is. I can only tell you that when I’m masturbating I’m a one and done girl.. I want no further stimulation. When I’m with my husband I can cum ten times and still be ready for more. I think because when I’m masturbating I’m there for the release, while sex with my husband is an all-body, spiritually connecting experience and it’s all about the journey and the sensations and the connection, so the orgasm doesn’t signal the end for me.