The top 2 are easy. Two tenured coaches with history on their sides. Even CMR and Miles should be given some credit for time spent and winning at their schools. However, circumstances probably have more to do with success at LSU than Miles decision making process as a coach.
After that, I don't know that the rankings have much relevance. Mostly because there isn't enough data on many of the coaches for it to be accurate. So many of the coaches are in the too early to tell category. Was the success that Gus had last year a function of pure luck or the recruiting base that he contributed to as the OC? Bielema inherited a complete dumpster fire that even Petrino wouldn't have been able to win with. Stoops is at Kentucky...could be a good coach, but it is still KY. Mason hasn't even coached a game and he is the lowest ranked coach on the list??? Not enough data on Freeze or Jones to really assess yet, but both seem to be improving their programs.
Really after the top couple, I think the only one that would be hard to argue was Muschump, unless he should be lower. He has turned one of the most competitive SEC programs into an afterthought in record time... remarkable.
I get that it is just an opinion, by default placing someone at 14, 10, or 2 implies the belief that the 14th guy is the worst coach in the league, which probably isn't true.