I recently flew on a UA 763 ORD-IAH and that aircraft (N642UA) was ancient in Y. The window shade was broken, the "AVOD" seemed like it hadn't been altered since the '90s, the seats were worn. If this was a domestically-configured aircraft it would be one thing. But the aircraft went on to fly to LHR and other European cities the same week.
While I've certainly seen photos of the updated UA 763 Y (which look good, especially the updated AVODs), AA seems to be doing better in terms of product consistency and continuing its cabin refurbishments swiftly. Of course there must be several reasons why this is, and I'd love to hear more about it.
UA 763, including the "ancient" configs, are superior to AA 763.
AA widebodies, after completing cabin refurbishments, are very inconsistent. Some have PTVs, others don't. In business, there are several different seats depending in aircraft: Concept D (788, some 773), standard zodiac (77W, A330), B/E Super Diamond (789, some 772), and Thompson Vantage (763). UA widebodies, after their refurbishments are completed, will be consistent: all will have PTVS and all business seats will be the Polaris style.