I agree with what is posted above. I also think that this is very different from the A380 thread because that was merely an airliners.net "rumor" that was reposted here, and to which Rainey eventually commented and basically said that of course they've looked at it but that it would never really work for UA.

This is different because this is originating straight from Rainey, and it's already been reported that UA is looking to acquire more mainline aircraft.