the mafia from catania (eastern sicily) is more powerful than casalesi clan, for example saviano inflated the real power of camorra/casalesi sicilian mafia is still stronger
Still the Casalesi was the most powerful Camorra clan,maybe they are still most powerful,i don't know for present day.
The Sicilian mafia in general is more powerful than Camorra,they are much more organized and have strong links to freemasonry