CC has his issues, namely, as you mentioned, his lack of success vs RHHs. But his HR/FB% is way up above his career average, along with his HR/9, while his FB% remains almost exactly in line with his career average. To me, at least in part, that seems like the product of some bad luck. And ERA, WHIP, ERA+, and FIP, while not useless metrics by any stretch (well, ERA and ERA+ might be, but that's for another discussion), do not accurately reflect true performance levels as well as xFIP does ... a point you've made in the past, both implicitly and explicitly.