One of the two is no good without the other. And they must be right for you and for the historical moment. One may have the followers and the goal and still be unable to mobilize followers towards the goal. Not everyone is able to be a leader. Also the situation must be right.
Circumstance is critical, if unpredictable.
Many get their chance to lead by accident. Angelo Roncalli was chosen Pope late in his life, and not because great things were expected of him-quite the opposite. Without realizing it himself, he had prepared well for this unexpected office. Both Washington and Napoleon needed great revolutions to make them great leaders. What about nongreat leaders.