For as much as most of us hate the Patriots, if they win the Super Bowl this weekend I think you have to make a strong case for putting him in on the same level as Chuck Noll.
As much as it pains me to say it I don't know how you couldn't? Yeah the whole spygate thing is a blemish on his record and people will put an asterisk by his name forever but he is still a good coach. I've always said for as much as I don't like him, he is the best gameplanning coach in the history of the game.
Chuck Noll though built that dynasty team from literally nothing. The Steelers were just flat out terrible until he got there and started drafting guys like Joe Greene, Bradshaw, etc. Belichick inherited a pretty decent team when he took over the Patriots. That doesn't diminish what he's done but I would say it's more of a plus for Noll to be over Belichick in that particular category.