Yes. Not to take anything away from Brady, but he would never been more than a backup flash in the pan under many other NFL coaches. Those coaches would not have had the intestinal fortitude to keep playing Brady when fan favorite Bledsoe was ready to return, for one thing.
And you missed my point about Dalton being average to slightly above average, I get that. What you don't get is that Belichick would not settle for that. And that brings up the question, how many other QB prospects have had the potential to be great but were stifled under lesser coaches than Belichick?
The real point is, we are blessed to have two GOATs at the same time, in the two positions that are most critical to team success, and they complement each other tremendously. That is just an incredible perfect storm for the rest of the league. There is simply no way to force parity upon that situation short of taking them both out of the game. Even taking Brady out of the game has not done it.
Here's a question though, we've seen what has happened when Brady is not on the field. What would the results be if Belichick was the one who is gone and Brady was still playing? What would the W/L record be for twenty games with Brady at QB and someone else coaching?