Your first point is a strong one. No real argument to be made.
The second point is at most a partial. While Brady isn’t tremendously mobile in a big way, he is generally enough within the pocket if he isn’t injured. But more appropriately, he is much less likely to be baited into a quick dump off to the defense. Manning has been particularly subject to that - especially in the playoffs.
Even that caveat would still leave a balance towards the Seahawks...except for the overt stupidity of the last week.