Per Cow, I don't think many people fly many airlines. But I think USians do more. And in Canada, its basically a national pasttime to hate on AC (and/or nationalistic sentiments towards Westjet).
My personal experience with UA J over the years is that I'd not spend so much as $50 more on it. And in the back, its entirely pointless to even know what type your in as the IFE is non-existent or at pay per view TV on recycled Game Gear screens. It isn't the only place I can get stroopwafel.
It for sure says something about the respondents that the musical chair carrier is in first place in any of the categories.