Rose has just never struck me as much of a leader. Your leaders should be the guys issuing the rallying cry and trying to get other good players to play with them (something LeBron never did his first stint in Cleveland, for what it's worth). Rose has been totally indifferent about recruiting.
Meanwhile, LeBron effectively brought in Kevin Love, Mike Miller, Kendrick Perkins, and James Jones, and he's got JR Smith playing the best playoff basketball of his career. Yeah, Miller and Perkins don't play much, but they're great locker room guys whose teammates love them, and I think great teams need guys like that (although if they can also contribute like Jones has that's a bonus).