The Ragin' Cajuns struggled to stay on the field in part because they converted only 38% of 3rd and 4th down attempts. This number is remarkable for a team that was 7th nationally in yards per pass. The second worst team in the top 10 in yards per pass in terms of third down conversions is 30 spots better (36th versus 66th). One part of the explanation may be that Louisiana-Lafayette did not have faith in their running game in short yardage situations; they were in the top 40 nationally in pass attempts in short yardage situations and they were stopped for a loss on almost 1/5 of rush attempts. Only three teams in the top 25 in yards per rush were caught in the backfield more often - USC, Wisconsin and Utah State.
Defensively, the Cajuns were unexceptional, except that opponents attempted field goals on only 14% of possessions. Their games were fairly high scoring so teams may have played past field goal opportunities. Teams may have been intimidating by the kick blocking potential. Or, more likely, it was just random chance that opponent's didn't kick a lot of field goals.