What probably makes the impact is that women typically have slightly less reliable/accessible high-end erogenous zones from which they can utilize.

As barbaric and senseless circumcision is in either case, males still have access to a substantial amount of high-yield sensation from the glans. Granted, the glans has probably taken a fairly significant hit to its effectiveness thanks to the removal of that foreskin.

And in-case it wasn't already obvious, I am not defending the practice in any way shape or form or denying the very real and needless impact that such damage does.