Mud Skipper,
"And if you purchased a Delta ticket to Atlanta it was operated as Comair 5191.
And if you purchased a Continental ticket to Buffalo it was operated as Colgan 3407 etc.
Your implication is not supported by evidence. Both CO and DL have a significant accident history with DL particularly being singled out by the FAA for very poor CRM and insufficient crew training. In fact DL came close to losing its certificate in the good old days back when the pilots were highly paid AND well rested.
Your assertion does not hold water.