A huge point is that the creditors get no cash or any payout for that matter until the deal is approved by the regulators. That will be at least a year or more. They will receive payout from a standalone DL in the spring. There is really no comparison for them. Take the sure payout very soon or wait for endless regulatory committees to review this. States and agencies will sue and tie this up for a very long time. All this time LCC stock will probably sink even more (its P/E is 116), making the deal even less valuable.
Also, it is very obvious that this is an attempt to eliminate a competitor who will emerge with lower costs, a higher RASM, and a better product than US. The DOJ will have no trouble seeing this. This deal is dead, in my opinion.