Meh, it's not THAT hard to make a case for Arrieta. ERA doesn't suck, there just better evaluation measures. Arrieta beats Greinke in IP, Wins, hits/9, FIP, xFIP, K/9, fWAR, total strikeouts, Games Started, Complete Games, Complete Game Shutouts, HR rate. Their WHIPs are just about exactly he same. I mean, what else does Greinke really have over him than a microscopic amount of ERA and a few less walks? I guess I can see he consistency thing, but it's not like Arrieta's first half ERA of 2.6 was particularly bad, obviously. Greinke had a half over 2 as well, although still better than Arrieta's worse half. I think you can make he case for Kershaw fairly easily, but for whatever reason I don't get the impression he will be that close in voting.