This list is a joke.

DiFronzo?

The Juarez Cartel almost went extinct after its war with the Sinaloa Cartel, with half leaving to join the Sinaloa Cartel. Vicente Carrillo Fuentes and the Juarez Cartel are still in business, but have no where near the power or influence as the Sinaloa Cartel or Zetas. Recent reports on Mexico indicate that the Zetas control the most territory.

Just my opinion, but I would have ranked Guzman #1 and Heriberto Lazcano Lazcano #2. I don't know a lot about the European OC gangs, but it seems to me the Mexican Cartels are the most violent and powerful OC gangs operating right now.