Are the dynamics of sex different when a circumcised guy has sex vs. when an uncircumcised guy has sex?

Do circumcised guys have to have sex harder and faster because of the lack of the foreskin sleeve? ...because of the lack of foreskin providing a double gliding motion, and also because they're less sensitive in the head because of the keratinization (thickening) of the head (glans), so they need to thrust... show more Do circumcised guys have to have sex harder and faster because of the lack of the foreskin sleeve?

...because of the lack of foreskin providing a double gliding motion, and also because they're less sensitive in the head because of the keratinization (thickening) of the head (glans), so they need to thrust repeatedly harder and faster to acheive more sensation?

This is a serious question because it deals with whether circumcision is not a good thing to do because it changes the fundamental dynamics of sex.
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