Brady struggles (or at least on even keel) with teams:
1) That have a Franchise QB like a Ben Rothelisberger or Eli Manning
2) That have a pass rush that can bring the heat on him
3) Teams that can run the ball and keep him off the field.
We were none of the above on Sunday
Actually the Bills should have run and run more yesterday. Gillislee was having a great day and got only 12 carries. You can't go on a shoot out with Brady. We played right into their hands.
I think it is a mix of both. Having said that our OL has played really well, giving our QB enough time to make a play. Dax would have been fine behind this OL.