These are all relative terms, BofB. Your definition--most revenue--could certainly be right. I'd offer that Frank Costello, who had the most political influence, might have been the most powerful, regardless of revenue. Then again, how do we know how much real revenue they had? These guys aren't likely to provide the Internal Revenue Service with verifiable records.
My impression is that the Bananna War generated more corpses than all the others. But, who knows? Most of the killings occurred in neighborhoods where people kept their mouths shut. As you probably know: when Bill Bonanno came to Williamsburg (Brooklyn) for his putative meeting with Gaspar DiGregorio, more than 100 shots were fired at him, but nobody in the neighborhood ever told the police that they heard anything.