Nobody is talking about "true talent." That's scouting talk. And don't care about 2016 right now. That's next year.
We're talking about 2015 performance. PERFORMANCE.
So, given hardly any difference in xFIP, SIERA, and xFIP- between Hendricks and Greinke, we should conclude that Greinke and Hendricks PERFORMED about the same in 2015, right?