This is the reality from perspective too. They’ve had a lot of draft misses, but when you have Brady you win anyway.
For example, look at the respective rosters of the Eagles and the Pats. The Eagles have better players at every single position except QB and TE, yet it was a close down to the wire game. That just shows you what having the best QB of all time QB means.
The Bills have been the anti-Patriots: bringing in good players at every position except the one that matters most.