No one is arguing that Iowa was good in 2012, defense included. But to make a statement like "the problem with this defense has always been.....and then allow a 10-yard pass on third down" is just silly.
In 2008 Iowa was 5th in the country in scoring defense at 13 ppg.
In 2009 Iowa was 8th in the country at scoring defense at 15 ppg.
In 2007 Iowa was 12th in scoring defense at 18.8 ppg
In 2004 Iowa was 16th in scoring defense at 17.6 ppg
In 2005 Iowa was 20th in scoring defense at 20 ppg
In 2003 Iowa was 7th in scoring defense at 16.2 ppg
In 2010 Iowa was 7th in scoring defense at 17 ppg
Yes, Iowa's defensive point per game numbers have benefited from an offensive style that helps limit the number of plays run in a game, etc. But finishing in the top 20 in scoring defense is getting it done, period. That's 7 times in the last 10 seasons the defense has been very good.
Can Iowa's defense continue anything close to that performance without Norm Parker? That's a question yet to be answered.