Here is a summary of the arguments:
AMR employees understandably don't want their airline to suffer from the competition SWA would bring to many lucrative AA DFW-? routes. So they're willing to make any argument EXCEPT that customers would largely benefit by the reduced fares and greater choice of flights/carriers. (any argument that AA would go under is absurd).
SWA employees want to be able to fly anywhere they want to, and a federal law banning them from certain city pairs flies just isn't right in 2005.
There ya have it.
Flea