Oh and I forgot to mention this as well since you don't seem to want to list where you get your numbers from.

Airline Performance Reports

Have a look. Mesa for the month of June ranked 10th out of the 28 North American regionals for on time performance. Your beloved Express Jet and Envoy ranked 24th and 25th respectively. So even with the hit we take with crappy rampers and gate agents at DFW we still have pretty damn good numbers else where to make up for all that to be 10th in on time performance. So obviously its not all on what Mesa is doing. AA knows this and hence why the Envoy rampers and gate agents are hiding under the axe.