I'm no stat tiger but the combined yards per carry of teams fsu faced for the year was only 4.13 so holding their opponents to less than 4 yards per carry isn't that impressive in fact 6 teams they played couldn't didn't average 4 yards per carry for the year. Auburn averages 335 yards per game against defenses that give up 175 yards per game (which is 160 yards more or 194%) and fsu rush defense averages 116 yards per game against teams that run for 166 yards per game (which is 50 yards less or 70%).