2008 just ended. You site one statistic. The changes you speak of would have been based on 07 and earlier data. Here is a summary of 07 for comair.

""Comair (oh) Ontime performance dropped from 73.8% in 2006 to 67.9% in 2007. Comair denied boarding performance worsed from 2.47 in 2006 to 3.17 per 10,000 passengers in 2007. An increase in the rate of customer complaints to 1.44 per 100,000 passengers in 2007 from .63 in 2006 was near the industry average of 1.42 for 2007. The mishandled baggage rate of 11.40 per 1,000 passengers in 2007 is higher then the industry average rate of 7.01 bags per 1,000 passengers but better then their 2006 of 11.98. Overall, Comair had the third worst AQR score (-3.78) of the sixteen airlines rated.""

From the reported statistics on key areas it does not look like Comair overall will have improved this performance much in 08. I suspect the overall ranking will be about the same.