I think Scarfo Sr was feared more than a Paul Castellano because he had a reputation for killing irrationally. Scarfo's reign over the Philadelphia underworld was accompanied by an atmosphere of paranoia.

But that's only because that's what New York wanted.

But yeah, Paul Castellano probably killed a lot more.

"For us, rubbin'out a Mustache was just like makin' way for a new building, like we was in the construction business."