IMV - there are always differences in most any field and more-so in this particular one.
But, as I view it, the Occam's Razor's position that "usually the simplest answer is usually correct" may apply here. If we look at the history, as sexuality changed beyond the monogamous, simple definitions of "male and female" positions, and the intimacy between the opposite sexes changed to more complex definitions, the society usually deteriorated and succumbed to the destruction of that society.
According to this site, there is a correlation between sexual permissiveness and the deterioration of that society.
frjohnpeck.com