Schaub and Ryan are not game managers. They are both in that second tier after the Mannings, Brady, Rodgers, Big Ben.
With the emergence of Foster, Schaub hasn't been asked to do as much the past couple of years. He is a very capable QB. And all Ryan needs to do is win a playoff game (preferably on the road) and then there will be no more knocks on him. He hasn't been as bad in the playoffs as people make it out. He ran into two buzzsaws in the 2010 Packers and 2011 Giants. Can't kill him for his rookie year playoff game, they overachieved so much that year.