It also says the following:
Georgia Tech's season-ending defensive statistics left a lot to be desired, as the club ranked in the bottom three of the ACC in Total QBR, yards per game, yards per play, yards per rush, passing yards per game, passing yards per attempt, sacks, first downs per game and third down conversion rate.
As bad as those figures were, they actually don't represent how well this defense was playing in the latter stages of the season. From November through the end of the 2014 campaign, Georgia Tech ranked 14th among Power 5 teams in Total QBR (31.7), 21st in rushing yards allowed per game (138.8), fourth in interceptions (9) and 11th in points allowed per game (22.3).
Those numbers make the return of eight defensive starters, a total tied for the most in the ACC, a very positive aspect, especially considering the number of impact defenders who are among that group."