MJ who??? Oh the 55 year old former basketball star who, along with his team, went 6 for 6 in the NBA Finals? Id say he did just fine in the leadership department.
In all seriousness, there are numerous leadership styles, and not everyone responds to them the same. Jordan had a very intense, in your face, take ownership and accountability type of leadership style. It worked for him and his teammates. Tebow was both fiery and gentle when he needed to be. It worked for him, as well.
LeBron seems to be a me-first personality who is just as quick to blame others as he is to lead them. Now, come at me LeBron truthers.