If that doesn't take care of it, then maybe this will:
Bum Phillips (Wade Phillips' dad) said about Shula, "He can take his'un and beat your'un, then turn around and take your'un and beat his'un."
Undefeated teams. 1, and it was coached by Don Shula and went without its Hall of Fame QB for most of the season, played an away playoff game (rotational basis back then, not home field advantage) in 3-Rivers Stadium in Pittsburgh in the snow, went undefeated dominating the game … yet were still underdogs because so many people simply didn't believe.
He built a team on a running game with Larry Csonka, on a passing game with Dan Marino, and when he had neither he came up with a two-headed monster at QB of one running QB--David Woodley--and one passing QB--Don Strock. He managed to draft low almost every year and churn out winning team after winning team. He dominated his division regardless of talent. He was regularly the least penalized team in the league. His teams were very often the lesser talented team yet he won with near-perfect execution, near zero mental mistakes (one season the entire team only had like 7 mental errors for the whole SEASON! … and we know because they kept very close track), superior conditioning (sometimes 5 and 7 times a day they'd practice and Shula didn't allow water or fans on the field), and absolutely the best preparedness of any team in the NFL every year.
Don Shula took a piss-poor expansion franchise and turned it into the winningest major US sports franchise ever … a title we held for a very long time, all because of Don Shula.
Don Shula put his players in a position to win strategically, physically, emotionally, and competitively. He won with inferior talent. When he had top talent, he achieved an unparalleled level of success.
If one is aiming high as a coach, there is no higher goal than to level reached by Don Shula.