Have the gophers ever come back from a ten point deficit? Yes. Not under PJ, but yes. One such comeback was against Nebraska in 2014. Huskers led 21-7 at halftime, but the Gophers came back to win. It can happen!
Does a mobile QB help to mount an offensive comeback? No real way to tell. But in the 2014 game, when the Gophers came back from a 14-point deficit, Mitch Leidner carried the ball 22 times for 111 yards (because Nebraska bottled up Cobb and Williams). We weren’t do damned predictable. Made the defense defend the run.