"Leadership is the art of creating greatness in other people.
From what I've read, Julius Caesar wasn't a very fearsome dude in person. There were plenty of other men under his command who could easily, easily beat him in single combat.
Ditto with Alexander. Ditto Augustus. Ditto Napoleon.
But of course, it doesn't matter.
It's not a leader's job to be great at whatever. It's the leader's job to make the people under him/her great at whatever.
Which is why, in old school Chinese martial arts, a master is not judged by how good his kung fu is, the master is judged by how good his/her students' kung fu is.
That's cool, right?"
Hugh McLeod, Gaping Void