He's average HC without him but he's still one of the best NFL defensive minds the sport has scene. I hate him but still give him and Brady credit for all they did in New England.
He won those Super Bowls due to strong defenses that Belichick ran. I'm not denying Brady is a great QB but Belichick is no slouch either as I won't forget how he put a master class in sopping Kelly and Bills passing game in Super Bowl XXV.