Tom Brady is regarded as the GOAT among quarterbacks by many sportswriters, but if this football season has shown us anything it is that Brady is purely a product of the Belichick system put in place 20 years ago that no other team has been able to replicate. It is a system that has produced 9 Super Bowl appearances and 6 wins. Brady often gets the credit, being the quarterback, but Belichick probably could have achieved this incredible milestone with any decent quarterback. After all, who remembers Phil Simms ? He guided the New York Giants to a pair of Super Bowl wins under Bill Parcells' system, which Bill Belichick was an integral part of. Belichick came to New England with Bill Parcells. It was Parcells who turned the Patriots around, leading them to only their second Super Bowl appearance in 1997, where they lost to a resurgent Green Bay Packers led by Brett Favre. Oddly enough, Parcells quit after that year to coach the New York Jets, taking Belichick with him.