I was re-watching GF for about the two-thousandth time this week. Tom was plenty assertive with Sonny--shouting at him, almost getting physical with him. But he was much more subdued, even submissive, with Michael. That's consistent with his background--Tom was a true brother to Sonny, but not to Michael. Sonny would tolerate back-talk, not Michael.
Ntra la porta tua lu sangu � sparsu, E nun me mporta si ce muoru accisu... E s'iddu muoru e vaju mparadisu Si nun ce truovo a ttia, mancu ce trasu.