As for Bruno Alves, maybe you know more, but I'm not sure he reads the game well. From what I've seen he's more of a soldier than a commander. Being a captain doesn't make you a natural defence organizer. Hell, Comotto was a captain one day.
Lo-Pan believe me, even if Bonucci had Samurais aiding him as full-backs, he will appear weak. He lacks a lot. His positioning, one on ones and concentration suck. IMO, This guy is a hopeless case.
Not sure if Lugano is the holy organizer as many members claim, but he's definitely miles ahead of Bonucci, who struggles to demonstrate basic defensive skills.
I've watched him enough to determine his style. Not a lot though.
His biggest asset is his aerial ability. This guy is tall and can jump as if he had a trampoline under him. His style is similar to Chiellini's, which depends on physical ability and not the head.