I sure hope not. I hate that AA is doing this.

At the end of the day - the issue is not around pax obesity (that has an impact whether in 3-3-3 or 3-4-3). IMO the issue is around shoulder width. There is a natural distribution of human frames that has a significant number of pax with "normal" BMIs for whom 3-3-3 is already tight; pushing that to 3-4-3 just makes it miserable, particularly on long hauls.

Slightly OT, even as an AA EXP, I won't travel on the 773 unless I can be in J. I've done longhaul Y in their 2-5-2 772 and don't care to repeat the experience.