Except Hutch's issues have very little to do with luck. He's generally pretty good but for whatever reason he lacks consistency over small stretches and pitches poorly. When he gets lit up his fastball is flattening out, he's missing his spots and he's hanging the offspeed stuff over the plate. FIP and other DIPS stats assume that a players skill level is fairly constant but in the case of Hutch you can't make that assumption.