I think you have to look at each one separately don't you? I also believe you have to combine it with opponents that scored on their last drive.
I see a few drives where the defense allowed the go ahead score with little time on the clock. Is that on the D or the O? If the D does there job the offense would have been successful.
3 were OT games, against Colorado, we threw a pick with no time left on the clock still in our end of the field and it still went to OT, Michigan St we took a knee and played for OT ( should that even count)
7 drives started deep in our own territory with less than 1:25 on the clock,
9 of the 17 (14 if you don't count the OT games) we needed a TD to win, so we had to drive the length of the field and not just 40 yards or less for a FG attempt.