Guaracci is the Official Don of North Jersey, although I think he is very influenced by Ralph Perna...
Different families.
Perna is Lucchese family capo, but he seems to have befriended Guaracci, therefore I am assuming Guaracci is influenced by Perna, if not the other way. Perna is obviously the most powerful of the two. Maybe he plays them, like Johnny Sack and The Sopranos?