Tony NOT actually a psychopath/sociopath

From my reading/watching interview about pyschopaths, their main characteristic is blunted or total lack of emotions. In particular, they dont feel emotional pain or remorse.

Tony definitely had a number of bad personality traits, but he was definitely capable of feeling remorse and emotional pain - over killing Big Pussy for instance.

He was just a glorified crew of a psychopath at best, a pygmy psycho.