Delmonico was 699-396 in 18 seasons.
Yes, I know he was successful. But you cannot deny that he laid some stinkers in there, too. Here are the SEC records for his last 6 years (all I could find):
2002: 12-18
2003: 13-17
2004: 14-16
2005: 18-11
2006: 11-18
2007: 13-15
You see what I mean? He had some bad years, but put up some decent ones (and a really good one) in the middle.
Anyway, the point is that I don't know if 2 years is enough time to completely evaluate a coach.