The analogy is flawed. Comair and XJet are not flying the same equipment/seat range as DL and CO for less money, and therein lies the difference. Both pilot groups fought for, and won, the top contracts in their sector of the industry. Yes, there is some replacement of mainline flying, but that's economics at work. It's a little different than if we started flying 737's for $35/hr in order to take their flying, which is basically what has happened at CHQ and Mesa, although I don't think that was the intent of those pilots at the time.
As far as my feelings about the situation, in the last round of contract signings, none of us had any idea how out of hand the whipsaw situation was going to get. Thus, there was no intent to accept a certain wage in order to compete for/take away flying. So...I have no ill will toward pilots at CHQ/Mesa, even though guys with my seniority there are certainly enjoying many benefits from growth that could well have been at Comair, if not for their lower cost structure.
However, the next round of contract negotiations will tell a lot. We all know the game now and there is no excuse for accepting a subpar contract, especially for those two extremely profitable companies. If it happens again, I will indeed have some anger for their pilots.