You mean UNsecured creditors, not secured creditors. The secured creditors are presumed to vote in favor of management's POR. Unsecured creditors are the ones who will vote on management's plan and give it the thumbs up or thumbs down.
I chose last year because it illustrated my point, but if you want, you can compare the dismal results at US since the merger in 2005; since 2005, US has lost an aggregate $1.1 billion or so (add the net income in profitable years and subtract the net losses in the losing years) despite the three bankruptcies between US and HP and the corresponding low wages those bankruptcies caused.
Further, US has paid more than AMR for fuel each year since the merger except for one year, 2010. Last year, in 2011, US paid $139 million more for fuel than it would have at AMR's price. In the years since the merger, US has paid several hundred million dollars more for fuel than it would have at the price paid by AMR.
There are more examples of the failure of Doug Parker and Co to keep pace with AMR, but to keep going looks like kicking someone once they're down.