This is a copy of what I just posted in the 2002 vs 2005 defense thread:
"Stats and differenital comparisons are cool and such, but they aren't always accurate comparisons. One reason why the 2005 defense compares favorably with the 2002 defense in differential yardage and differential score is that the other Big Ten defenses this year are worse than their 2002 counterparts, thus allowing 2005 Big Ten offenses to score at a higher rate than the 2002 offenses scored. Keep in mind that the 2002 defense allowed one single TD over than last 19 quarters of conference play in 2002 (from Larry Johnson's TD run in the first quarter of the PSU game through The Game). The scoring averages of each of those five teams entering their game with us, and their score against us:
Penn State: 37 ppg (7 points, 1 TD)
Minnesota: 34 ppg (3 points, 0 TD)
Purdue: 27 ppg (6 points, 0 TD)
Illinois: 30 ppg (16 points, 1 TD)
Michigan: 29 ppg (9 points, 0 TD)
Our first string defense gave up a total of six TDs in conference play in 2002. Our first string defense has given nine in our first five conference games this year, with those nine TDs coming in the last four games (well, one TD was the gimme 1 yarder, so let's just count eight). The 2005 defense is very, very good, but it's nowhere near the 2002 defense as a unit."
Just as the last sentence in my post said, we're a very good defense thisyear, but we're not the 2002 unit.