Jimmy Johnson is hard enough to handle when his team his winning Superbowls and utterly dominating the league (Cowboys.) I cannot imagine what he must have been like in Miami where they struggled. My gosh, I shudder just to think.
Johnson tried to apply the same plan he started with 11 top picks with the Cowboys and apply them to the Dolphins. You can't do that with a talent like Marino and no HOF running back.