Wiggy,
That DAL guy would still find himself senior to several NWA guys with earlier DOH because they started out in a category below him. Like I said, the net result of the merger is some pain...you have to decide how to spread it. The NWA guy at 10.001% who finds himself below your hypothetical DAL pilot might be a little upset because he was hired a year or two before. This is good...everyone is a little ticked off...perfect.