Purely on a seniority only basis, one would have to say it isn't. BUT considering the massive pay and benefit differential, seniority by itself isn't and likely shouldn't be the only determining factor.
Essentially, the Air Tran guys want and expect the money and bennies they never had, from an airline many of them were not qualified to join, all while enjoying seniority due to an expansion with an airline that is barely breaking even and has little if anything in the way of cash reserves and thus likely a very uncertain future.
The Air Tran people get a windfall.
That's what seems to be outraging the SWA guys.
Pointless to continue to debate.
What concerns me most is why would three airline folks be so obsessed with something which has nothing to do with them. It is extremely disconcerting.
Additionally, the lack of ethical behavior demonstrated is appalling. When this sli is completed we will open this discussion.