ESPN was actually gentle on the XII "no defense" that always seems to come up. PAC 12 is worse that XII this year. They point out BIG 10 is the "no offense" conference.
http://www.espn.com/college-football/story/_/id/21514646/numbers-say-big-12-really-defensive-problem
http://www.espn.com/college-football/story/_/id/21514646/numbers-say-big-12-really-defensive-problem