Again, football is a team sport.
A good QB I honestly believe is helped by his team mates.
You honestly think Brady's offensive line sucked, he had no running game or no receivers who could catch and make plays over the years? This is where it it up to the front office to build a team TOGETHER.
Dak is a good quarterback. He's 58-34 as a starter, and that's a bad record. The issue with Dak isn't Dak, but his front office because he's 1-3 in the playoffs in the last 5 years.
Hurts is 23-18-1 as a starter and lost one playoff game last year.
For whatever reason, the front office at the Eagles saw something in him (when at the time a lot of other people didn't) and went out and tried to get Hurts help. It's paying off this year for them. Thing is, who is getting Hurts help and who exactly is getting Dak help?
Could be worse though. Look at the Bronco's and the Browns. The only way the Browns don't go down in the history of the NFL as being the worst fleeced team in the league is if D. Watson doesn't win them a Super Bowl. End of the day, for better or worse, "greatness" isn't determined by your win loss record, but if you can win the big game. Brady is a great football player, but his front office always made certain he had the help around him IMO.