I can't believe you are not giving Bill credit for winning with Cassell . Seriously, have you even looked at the patriots roster from 2008? They had two pro-bowl players that season. One was Wes Welker
the other was a kicker..Their running backs were terrible! That roster wasn't even close to being elite.
Belichick has consistently coached that team to excellence for over a DECADE. He has lost coordinators across the board since the SB victories and maintained success on both sides of the ball. He has made savvy moves as both the HC and GM of his team (one of 4 such HC-GMs in the league).. He thinks outside the box and experiments, often successfully. (Loved when he took the safety on purpose)
http://espn.go.com/boston/nfl/story...conventional-moves-coach-new-england-patriots
As far as Cleveland goes:
1. Its Cleveland.
2. He got them to the playoffs and an 11-5 record and won a playoff game in his 3rd year (1994). He also gave us one of our 4 losses that season...
3. Have you seen the Browns 1994 roster? I wouldn't exactly call it stacked. In '95 They announced the team was moving to Baltimore in November and fired Bill after the season.
As far as winning in the NFL being purely players, i'm pretty sure the 49er's would disagree with you.
Its impossible to know how successful Bill would be in Dallas, but there is no denying the guy can coach.