Scoring Defense is what counts. Yards don't put points on the board, getting in the end zone does. Oregon's been a bend but don't break defense for as long as Nick Allioti has been there. Between the 20's is where Oregon gives up most of it's yards, but in the red zone, teams only converted 67% of the time.
By comparison let's look at LSU, and the other teams you mentioned:
Oregon: #12 18.69 ppg / 67% red zone defense.
LSU's #11 Scoring D: 18.23 ppg / 81% red zone defense.
UNC: #45 Scoring D: 23.23 ppg / 76.47% red zone defense.
WV: #4 Scoring D: 13.5 ppg / 76% red zone defense.
Alabama: #3 Scoring D: 13.54 ppg / 64.5% red zone defense.
Florida: #29 Scoring D: 21.3 ppg / 82.5% red zone defense.
(Stats from
cfbstats.com - College Football Statistics)
Of these teams, Alabama (possibly West Virgina, although they play in the weak Big East) is the only team that stands out as being
decisively better than Oregon's D (Statistically). The rest of the teams are pretty much a wash with Oregon.
I'm not saying Oregon will dominate on defense. Not at all. It's just astonishing to me that you can't seem to give any props to Oregon for having a good defense.
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