When you have a pure pocket passer, you have to worry every time he runs, and you have to worry any time there's a free blitzer. When you have a QB who can run, you have to worry about stupid injuries because of the running, and you have to worry about the tendency to do too much on the scramble. When you have a RB who's playing QB, you have to worry about his passing decisions and pocket play.
This is universally, or at least almost universally, true.
This is universally, or at least almost universally, true.