Michael said,
U is doing better because they got their costs down. I think the RJs will actually work against them.
Although U is adding a considerable number of CRJ50s/70s to their fleet (via PSA) a good number of the "RJs" they are adding are the Embraer 170s.
Just because we call something an "RJ" doesn't necessarily make it an uncomfortable, substandard, piece of junk.
The E170 is receiving quite a few accolades from the frequent flier groups. It is significantly more comfortable than the CRJ70 (6 inches taller and wider due to the double-bubble fuselage), larger overheads which accomodate rollaboards reducing the need for gate-checked luggage, jetway compatible (without adapters), underbelly cargo with traditional servicing on the opposite side as boarding (prevents customers from hanging around the door looking for their bags), no middle seats, full-sized lavatories -- the only thing these things are missing is IFE and food service (and I suspect Jetblue will remedy that when they take delivery of theirs.) There is nothing "regional" about the E170 except for the payscales -- and it is THERE that management has won the war and provided their customers with an exceptional product at a rediculously low cost.
If RJs are contributing to the recovery of US Airways -- and I believe that they are -- then, without a doubt, providing a "mainline" product at an "regional" cost-structure as they have done with the E170 may help make the difference between an airline that is simply surviving and one that has become the first legacy carrier to complete the transformation that will ultimately be required of ALL major airlines, allowing them to effectively compete with the LCCs.
Lousy for our careers? Arguably. Visionary for airline management? Absolutely.