I don't believe that is accurate. AA's consolidated CASM for the first three quarters of 2013 is lower than DL's consolidated CASM for the first three quarters. And that's true whether we look at the all-in CASM or the ex-fuel/items CASM.
All-in CASM for first 9 mo of 2013
AA: 14.33
DL: 14.71
Ex-Fuel/Items
AA: 9.07
DL: 9.09
http://news.delta.com/index.php?s=43&item=2144
http://hub.aa.com/en/nr/pressrelease/amr-corporation-reports-third-quarter-net-profit-of-530-million-excluding-reorganization-and-special-items
AA's consolidated CASM advantage over DL increases even more if we compare apple to apples, and that's by not excluding DL's profit sharing. I realize that the DL accountants (and all accountants, for that matter) are sure that excluding profit sharing is the correct approach, but that reasoning is flawed. Profit sharing is wages. compensation and benefits even though it is contingent on profits. By excluding profit sharing, we get a bizarre result of higher profits equaling lower unit costs. That's a perverse result that ignores reality. Kev and all the other DL employees are owed profit sharing based on the reported profits, and thus it is a legitimate ordinary cost of operations for DL.
AA's unions, being just about the most stupid unions on the planet, traded away most of their profit sharing for meager increases in hourly pay. The reason the unions were stupid to do so is that many of the DL workgroups have higher payrates than the AA payrates. On top of that, the DL employees are also owed profit sharing. If you're going to suffer bankruptcy concessions, the most brain-dead thing you can do is to give back the 15% first dollar profit sharing that management offered in its term sheets.
Going forward, however, AA's consolidated CASM is likely to rise substantially, as new AA increases everyone's payrates and makes the inevitable capacity reductions that always accompany mergers. Had the merger been blocked, the five-year 20% growth plan would have lowered the unit costs as capacity expanded.