It contains every success bronco had in a decade.

"Three signature wins over Utah..." how many wins did he have over Utah? And how many losses?

"Mentored KVN and Ziggy and Jamaal..." how many other guys did bronco get into the NFL during his time here?

Your post is completely blind to the facts. If bronco had all those successes in three years no one would want him gone. But he only had three years worth of successes in his entire career here, and many of those successes came at the start of his time.