I'm right there with you. You can look at my post history, I've pretty much said the same things. Naples is URBAN, the Calabrians and Sicilians are RURAL.
I've posted on how the rural mafias have to move around the world because their surroundings simply don't have enough INDUSTRY to siphon wealth from. It was part of a long drawn out post about the difference between " Power syndicates" and "Enterprise Syndicates".

The Naples clans control the INTERNAL markets in Italy, they are in the streets. It's why I don't necessarily agree that they are " Less" organized, like you say, the culture and criminal methodology is a little different.