Well thats exactly it. In the OP's chart, our record (and Ravens) are far and away above that of anyone else. Both teams have run into the Chiefs dynasty. Kinda why guys like Malone, Barkley, Ewing etc. retired ringless in the NBA from the 90s..their primes were at the same time as Jordan's or Hakeem's. Hats off to KC. To be the man, gotta beat the man. And its that time IMHO...
There is also the fact that McD is not perfect, there are a handful of coaches who I believe are better. But....if you make that kinda change, you better be right. Cause then you really blow Allen's prime if you are wrong. Only coach in the last 5 years I would have made the move for would have been Vrabel. Just my $0.02.