I still hold my opinion that only the most powerful groups exist and not just one . On a similar level I would say in terms of wealth , power and organisation it's the Mexican Cartels, Italian Mobs and the Chinese Triads. The Eastern European groups aren't so organized . Also remember that the Calabrian mafia are estimated to make 44 billion , and all the Mexican cartels roughly make 50 billion. That definitely says something about the ndranghetaat the moment