I'm just guessing here, but I'm guessing that Clinton probably had a quick-response legal team to offer his victims confidential financial settlements. Cosby probably was too arrogant and/or stupid to think of such a thing.
Remember, Michael Jackson never spent a day in jail either.
Your guess may be correct. What happens if the paid off victims speak anyway? Do the Clintons come after them to pay back the hush money?
The idea of hush money speaks of an effort to quiet wrong doing. If the fact of hush money ever came out, it would be easy to find that she knew that tactics were being made to shut women up. She would be an accessory to crimes. It would make der Hildebeast toast. Dark clouds are moving in over the Clintons.
Maybe Trump is on to the facts of the matter.
I think that on the whole Clinton was probably better at sweet talking and cajoling, rather than using booze and drugs.