AA is actively keeping first class on 77W or A321T planes as they're taking deliveries.
UA is actively choosing two-class BF only on their new deliveries.
You can certainly argue about what will happen with existing 777s/747s on either UA/AA side, but only AA is continuing to actively invest money in international F, whereas UA is just stuck with it on some pmUA planes.
Of course there are hundreds of posts on here discussing whether it makes any sense for a legacy US carrier to offer three-cabin F. After all, if you're actually paying for intl F, you'd have to be insane to choose either AA or UA. Calling either true international First is dubious too - there's more to it than a better seat and a soup course.
Last edited by goalie; Aug 25, 2014 at 4:24 pm
Reason: removed superfluous comment