My problem is this:
When someone typically calls a woman a whore/ho/slut, it is NOT because they have seen 10 men approach her and know that she slept with 5 of them or whatever other scenario. They usually have no idea of the "whore"'s sexual history or motivations. They are not in her bedroom to know who exactly she is sleeping with and they are not in her head to know what her motivations are. It's not based on any scientific or even remotely accurate and uniform method of observation and determination. It's a plain old misogynist diss used to put women in their place that is so prevalant that women have taken to using it against each other. It's a loaded word who's modern day usage has very little to do with any dictionary definition.
Men are not out there shagging everything that moves in some sort of primal effort to reproduce. They like sex and it's socially acceptable for them to express that and pursue that without having strangers sit in judgement of their moral fiber. Furthermore, men being called studs (usually by other men) is just another way for males to find a bullshit reason to pat each other on the back. Women know that there are plenty of "studs" who's "game" is weak and who's skills are wack, but since he's attractive, women will always want to sleep with him. It's got nothing to do with any sort of skill or achievement on his part. Men generally have no idea why women choose to sleep with them. They just assume that they are so irresistably smooth. Puhleaze! Half the time we decide that before you even open your mouth.