Jimmy Johnson - Coaching Fraud?

The Cold Hard Football Facts looks at one of the side results of the Raiders hiring Art Shell, namely that next year there will be no former Jimmy Johnson assistants as head coaches in the NFL. How did the proteges of Johnson do as head coaches in the NFL? The phrase "Rich Kotitesque" comes to mind:

How ’bout dem Cowboys coaches? All of Johnson’s former assistants have losing career records. Counting the playoffs, they collectively went 182-242-1, for a combined winning percentage of just .429.

Any way you cut it, Johnson’s coaching tree has been a disaster. Every branch has rotted and needed to be removed. In the end, not a single member of his staff proved to be solid head coaching timber.

They then go on to examine the circumstances surrounding Jimmy Johnson's success at Miami in college and in Dallas in the pros. I must say that I was left wondering if Johnson is the Casey Jones of the NFL.