to be fair Vito was boss in Canada which makes a world of difference compared to the legal pressure a boss in the U.S faces. Hell I mean Vito came down to one murder in New York and got pinched for that and did time in Florence which is probably the worst prison in the states. He was afraid of getting for something in that states and all the murders he has supposedly had done have been out of there. So all I mean is while he was a good boss in terms of cosa nostra he also had a lot less risks than his American counterparts.

Imagine if the Genovese family was based in Montreal. I am sure they could drop bodies left and right too if they wanted. And besides for being such a great boss his son and dad where both killed and his brother and law kidnapped so that really isn't that impressive.