I’m not selling, just stating truth.
The idea that women are something negative is they screw around (”slut”) but men are something positive (”stud”) is a false notion that has to be stopped.
Incidentally, “stud” literally means male breeder. It is used in breeding animals all the time. It has no negative connotation. For male humans, it’s seen as a great thing.
“Slut” is strictly slang, and is meant as an insult.
They are not equivalent at all.