The topic of the outfit being an enigma got me thinking. How do we know the Genovese are the most powerful family in the US?

Not starting a "i don't believe it" thread. I think they are. Just was interested to look at it from a different perspective. Perhaps to see why we know so little about the outfit. What's different?

How do we know so much about the Genovese? How do we know they are so powerful? Where does the info come from?

Thoughts?