What does it take to be the Michael Jordan of?

When people talk about someone being the Michael Jordan of something, they're usually referencing a standard of greatness. But what makes a Michael Jordan? Or a Tiger Woods, a Peyton Manning, or a Michael Phelps? Or, for that matter, an Alex Bogusky, a Dan Wieden, or a David Droga? I've narrowed it down to four characteristics. Genetics (also known as talent). Willpower. Competitiveness. And luck.