Are you implying that DL/NW is comparable to SWA/AAI? If so, what color is the sky in your world?
Yes. GASP! When you take the emotion, the threats, and the sense of entitlement out of it, it isn't very complicated at all.
One carrier was hiring, expanding into international markets. It had tripled in size during the worst decade for airlines, and had another 30% fleet growth on firm order. It has a more junior pilot group, with quicker advancement but less compensation, although large gains had been made with each successive contract. Pay is definitely lower at this carrier, but they only at year 15 in their history.
The other carrier had been around longer, had more cash, a longer and more storied history, but in recent years, it had matured, its costs had gone up and growth had stopped. No pilot had been hired in the past few years, and folks at the bottom would likely not see much advancement until retirements began again. Any orders were for fleet replacement. More retirements are scheduled at this carrier, and the Captain age demographic is somewhat higher. Pay is definitely higher here, but after integration, both groups will be paid the same, so it doesn't take away from this group to pay the other pilot group the same hourly rate.
In other words, to an Arbitrator, it's not going to be brain surgery. There will be no staple. There will be no "bump and flush". There will likely be not a lot of change, period. That is their job- to merge the lists in a way that causes the least amount of change to a pilots' expectations for seat, equipment, domicile, and bidding power, and the number of years in the top seat.
I know you guys don't like it, but historically, that is how it has gone. If you want to take your chances on Arbitration, I think you'll be surprised and disappointed. As long as you keep thinking you are the "star-bellies", though, reaching a mutually agreeable list that will pass muster with both Pilot groups is unlikely.
This argument has not changed since September. Nothing has changed, except the exchanges have gotten uglier and more personal, unfortunately.