I'm sorry, but I can't give Belichick too much credit for Brady. I'm of the opinion that great quarterbacks have intangibles that can't be taught, and coaching has less of an impact on their performance than their god-given abilities do.
I think the great quarterbacks like Montana, Bradshaw, Marino, Aikman, Manning and Brady are great, and would have been great, regardless of their coach. They might have been less successful with lesser coaches, but they still would have been great.
Give Belichick credit for making the Pats great, but don't give him credit for making Brady great. Afterall, if Belichick knew he was so great, why did it require an injury to Bledsoe to put him in?