You need to take 30 seconds and find three spare brain cells to rub together and think about WHY that is. I'll give you a hint: it has nothing to do with the amount of resources that ALPA uses at mainline vs the regionals.

Mainline pilot groups OWN their flying. If AAG votes down a contract Parker can't call Anderson and have Delta pilots fly the airplanes with American paint on the side, unless American pilots give him that right in a CBA.

There isn't a single FFD carrier that has that kind of leverage.