A team that had very little experienced talent lost Tank, Ridgeway, Jinkens, Jefferson, and Ford for the second half of that game.
Bedford/Strong defenses have finished 14th, 23rd, 23rd, 2nd, and 27th the last 5 years. Set aside what you think of Strong as a HC - do you think he suddenly forgot how to coach defense? Those Louisville defenses weren't filled with 5 star guys that succeeded despite scheme or coaching.
If you use adjusted stats Texas is 50th in PPG allowed, 43rd in Points per Play, 28th in Yards per play, and 33rd in Yards per possession. All while playing one of the toughest schedules in the country and 7 of the top 27 offenses in the country - including 2nd, 4th, 6th, and 10th most productive offenses in college football (with #1 Baylor still to play).