Was having this discussion the other night deadheading with some of my FNWA brothers to DTW. What's the qualifier? Most pilots? Most aircraft? Most employees? Most routes? We came to the very uneducated decision that it must be decided by most pilots. We also agreed that the real benchmark is most routes and overall employees.

One might be the "world's largest airline" and own less jets, have less employees, but claim more destinations. I can't see how the UA/CAL merger would trump the new DAL.