A leader who leads by force will only have control as long as he is immediately in a position to impose sanctions upon that follower. The follower follows out of fear and only when afraid he will get caught.
A leader who leads by the 'cult of personality' (for lack of a better term) motivates his followers to follow even when he is not in a position to impose sanctions. They follow because they want to and believe it's right.
How many of us followed JW teachings even when no one was around because we thought it was the right thing to do?