I'm probably splitting hairs. The lowest team ERA since 2001 was 3.54 in 2006, but the average has been 4.24. I agree 4 is really good. 3.5 is God-like, imo. Any closer to 3 would be historic. There are currently 5 teams out of 303 D1 teams with team ERA under 3.7.
Bottom line. I think the pitching staff, which is consistantly at the top of the conference, takes unfair criticism. If the team had been as constistently good in other areas, there wouldn't be a Negative Nelly thread, imo.