Ask HN: What's your definition of an "A+ Player"?

A) What's your definition of an A+ Player B) What metric do you use to determine if someone is an A+ Player or not. If it helps here's a quote from Steve Jobs to set the context. I'm not certain about the validity of the quote. "I noticed that the dynamic range between what an average person could accomplish and what the best person could accomplish was 50 or 100 to 1. A small team of A+ players can run circles around a giant team of B and C players" -- Steve Jobs