Let's add a little context.
Book's QBR this year vs UGA and VA, was the highest of any QB playing against either team so far this year.
Meanwhile, our OL, ranks outside of the top 20 on every FO stat, and ranks 115th in my favorite FO measurement, Power Success Rate. That's pretty awful. It's actually really awful given that aside from UGA, we've played 3 teams who have not had a top 25 class in the last 5+ years.
Book is certainly not a superstar, but aside from Kmet, the entire offense is pretty mediocre. We don't have a RB that would start for any top 10 team, and it's arguable that our starting WRs would start either. I'd add that play calling has been mediocre at best except for short doses here and there. Yet even with only 28 yards of RB rushing, and 2 INTs from Book, we still had the ball late with a chance to win on the road vs a top 5 team.