I agree with this post. I also would note that it was the player evaluation culture instilled by Belichick that led to the Ravens winning a Super Bowl. He hired Ozzie Newsome, and he made the trade with San Francisco that gave the Ravens a batch of high picks. One of which was used to draft Ray Lewis.
Belichick had things figured out in Cleveland. That's where he really developed his coaching method. Too bad for Cleveland that they had a stupid owner who did not recognize this. Belichick could have made the Browns the dynasty that the Pats have become. Imagine if Belichick had remained HC in Cleveland and Art Modell had not moved the franchise to Baltimore.