One of those things, that isn't X's and O's, is can they work with each other's personalities. I think Moore understands that. Even IF Moore is heavily leaning toward Carr as the starter, I think he has the foresight to know that there's always the possibility that after their first long and in depth meeting. either Carr or Moore could decide, "yeah, I can't work with this jerk." I think that's unlikely to happen, but it's possible.