Cosby used knock-out drugs on unsuspecting women. Weinstein used a kind of sexual harassment extortion. What Cosby did has always been accepted as rape. What Weinstein did is being debated. If the women were not forcibly assaulted, drunk or drugged, were they legally raped, or, were they prostituting themselves for obtaining acting jobs in exchange for sex?
Cosby told women he would help their careers. He then gave them drugs which they took willing.
I've read the details. It is not credible that the women were not aware of what they were doing.
I have not read the details of Weinsteins.