I have to go other way on Gravano. He killed way more people than Gotti, and was as paranoid as Casso. It would have been one killing after another with him as boss, followed by him doing what he did when arrested, turning informant.
Your bang on the money, Sammy was all about the money the more he got the more he wanted he would have still been a rat once it is in a person to rat they will.
