I'm no Fran defender, but PPG or PPG allowed are both kind of worthless if you ask me. If you are playing at a fast pace it does actually mean little really. Just because Lick's team took the air out of the game, didn't mean they were a good defensive team, it just meant they played boring as shit BB.
'10-'11 Iowa was 56 in Adjusted D
'11-'12 Iowa was 205 in Adjusted D
'16-'17 Iowa was 123 in Adjusted D
'17-'18 Iowa was 242 in adjusted D
Outside of the '10-11 year which actually was not a terrible defense, the other years were NOT good.
It still kind of blows my mind that many on here don't understand more advanced statistics. Adjusted D and O mean a lot more than PPG or PPG allowed. If a coach decides to play at a faster pace, or course more PPG are going to be allowed as the opponents get more possessions. So that mean nothing, if you are good at stopping teams from scoring, that is what matters, not what overall points they ended up getting to.