As far as the northeast goes, what Ivy says is 100% correct, in theory. Dems be da rules. But in practice? Meh, who knows?
Best example I can give is here in the Bronx, early 2000's. Vinny had just become official boss of the Bonannos, but Prisco had just gotten out of Jersey State prison on a bullshit technicality (thanks to Governor McGreevey, a gay guy, Ivy
). Anyway, they were both quite active in the East Bronx at that time. Now Vinny as boss of the Bonannos technically outranked Angelo, a skipper with the Westside. But if you polled a hundred street guys, I guarantee you 90 of them would have told you that Angelo was the heavier guy.
But that example is moot anyway. Because I know for a fact that Angelo likes Vinny a great deal. I'll bet if Vinny had it to do all over again, he'd have gone in with Prisco back in the '80s instead of with Patty D and the Bonannos. He and Patty ended up hating each other like poison, and look at the end result for both of them. But again, that may be a poor example. Because Prisco's dying in jail, too.
Moral of the story: Mob guys die in jail. A lot
.