Yeah, I understand. I don't know exactly how much he did kill but I know for a fact he killed more than one. John trusted Sammy so much so I bet he appointed him as a killer for some, maybe 4 or 5 killings but facing that number he wouldn't be seeing any light. I think he only says that he killed one person to get away from court. Joe Colucci was a soldier so I think in the Colombo family and yet Sammy spent 21 years in organised crime so I doubt very much he only whacked one person. Sammy was a high ranking member and a very trusted member along the Five Families so I guess he did several whackings for other bosses too.