I do not have the context of how much either candidate has control of the scheme or the play calling, but here is a comparison of some relevant rankings per the NCAA website for their team defense, take into consideration there is a difference in competition and roster of course:
Total Defense
Georgia 2, Houston 6
Yards Per Play:
Georgia 1, Houston 6
3rd down %:
Georgia 19, Houston 1
First downs allowed:
Georgia 4, Houston 8
Passing yards allowed:
Georgia 3, Houston 16
Red Zone Defense:
Georgia 1, Houston 11
Rushing Defense:
Georgia 3, Houston 13
Scoring Defense:
Georgia 1, Houston 27
Passing efficiency defense:
Georgia 2, Houston 21
Team Sacks:
Georgia 15, Houston 5
Team Tackles for Loss:
Georgia 43, Houston 25
Turnovers Gained:
Georgia 60, Houston 14