Originally posted by Sicilian Babe:
Although Sonny was famous for his bad temper, he could be a soft touch. He was the type that reacted, and then often felt bad for his reaction (witness how bad he felt after insulting Tom. Michael didn't care when he did so)...
Except the context of the question was who would you fear most if you were a 'rival Don'...an ENEMY of the Corleone Family...not if you were a family member & got into an argument with one of them.
I doubt that after striking back at an enemy of his Family, Sonny would tend to feel bad. That's indicated by the 'hit' on Bruno Tattaglia (at 4 in the morning) after Michael got his jaw busted.
And even if he did...little good it would to the now dead enemy!!
Apple