Rosemond from what I hear had some real cred while on the street, I wouldn't call it power, but he had a shitload of money, and was just a man about his business, illegal or otherwise. The average NY Gang member has nowhere near that sort of power out here, not even the leaders in most cases. A lot of them are teenagers, and the older ones can't afford to go to war with a person like Jimmy Henchman and those he employed.