Well, it's not a clear thing, Don King once said of Holyfield, "he can't draw flies to a dump" and he said "Ali was a promoter's dream" at one point. I often wonder what they do, especially when most of the guys they work with at the highest level don't need much promotion. It's the same in music too, you'll hear a lot of artists/Record execs point the finger at each other for failed album projects, as Prince once yelled at Clive Davis, "I have to make the album AND promote it?" Really are no easy answers.