Fact is that Bloch got it just about perfect and think that is why there were 273 NWA that got plug and play. Out of all of those early outs that DAL had only about 300 would still be here. The rest would have retired prior to Dec 13th last year when age 65 took effect.
Thus, the net gain by Delta was zero. Bloch completely leveled the field with the way he did the top of the list.