It all the depends on perspective:

First 6 months of the operation, the CRJ's generated an average of $40,000 in denied boardings per month per station. After six months that number was slashed to $20,000 average per station per month.....I don't believe CAL considered them a success, and that's part of the reason why the leases were not renewed. 20+ 50 seat RJ's flying around, and CAL pilots not giving up on scope....hardly a great outcome!

Back to the subject at hand, as much as it hurts me to say it (because I do like Frontier and their product) Southwest is going to kill them, in the same fashion that they nearly destroyed Airways (pre-merger) in the Northeast. The advantage US had was multiple hubs to compensate for the damage in some of the others. Frontier does not have that luxury. Once again, all the best to those guys.