No not at all, it's on the 'constant'. If a coach is a head coach for 10 years, and they only strong success is with a single QB over 3 years, then the only constant of success is the player and the constant of failure is on the coach. If instead over 10 years, the coach (like for example CJL) consistently wins 8ish games with all different players, then the constant is the coach. You seem to forget that CWT was expected to be fired any minute before he turned QF loose...