This just seems obvious to me.

I read somewhere that female genitalia have 4 times as many nerve-endings as male genitalia or something like that.

This is a description of sex from the male perspective.

This is a description of sex from the female perspective.

Note: Men can orgasm anytime they want, but the orgasms are pathetic compared to female orgasms.

Clarification: The descriptions above are just included in order to spark people's imaginations of what it's like to be the other sex, not because they necessarily support my claim that females have a better experience.