You can't just look at a number.
I have no idea if Miller is a TOR guy or will be. But there are multiple evaluators who have said that he changed his approach. More CB, sinker, etc.
You keep screaming BABIP. That works if the guy pitches the same way with different results. In this case the guy make changes. Obviously luck could have made those changes more impactful that they really were. We are talking really low sample size here.
Luck is the major reason someones BABIP is near .200. And yes it is a small sample size. His K/9, BB rate, and HR rate are not all that spectacular. Even in his 2nd half last year. His success is almost all directly tied to that low BABIP. The chances are very high his BABIP will be near .300 in 2015. Thus his era will rise if he doesn't improve in other areas.