Yes, I also wonder why the WSJ can't figure out basic facts about America's Most Valuable Airline.
I caught that Phoenix error (do you think they would mess up UA's or AA's HQ city?), and a few weeks before that, the WSJ ran an informal comparison of FF programs in their Friday section. Again, they omitted SW and retracted the error the following week.
I guess the highbrow editors don't schlep out to Islip very often...