Obviously, there's 2 sides to every story and you left out the one that didn't fit your narrative.
The Pats defensive ranking average since Brady left has remain at the same level. So where are all the championships ?
I'm sure you will go back to your argument that this is a team game. Well, go do the math over the Ravens past 5 seasons. You'll see that Jackson actually had a greater help than Brady from his defense. 4 of 5 years they were into the top 3. So were are all the championships?
Winning a championship is hard. It takes a special player to bring a team 10 times to the championship game. Of course it's a team game, nobody would win with high school talent, but a lot of teams and a lot of coaches had great talent over the years, yet there's only 1 individual that made it regulary to the championship game. If you can't see the impact Brady had on the team, then I'm sorry for you, you missed the show off a lifetime.