AA's upgauging of the 320 family

Why it won't happen? Raw percentages. If 50% of the workgroup is in favor of screwing over the other 50%, you'll wind up like HP & US, or UA & CO.

The percentages supporting APA are well in excess of 60%. There's no way a minority union can swing 20% support in their favor absent a huge action of malfeasance. It's something the TWU might be able to pull off, but APA is far more reasonable in comparison.
 
Yep... It's an answer there's no rebuttal to, since the math hasn't moved on this since the first day merger rumors surfaced.