From my reading of the article it was concentrating on the split system varieties. Perhaps the title should add Split System between the Brand and Air rather than just Best Brand Air Conditioner to make it clear that the results are about Split Systems
Fascinating as I am currently shopping for one. Virtually all of the HVAC companies are behind a single brand, not the Choice choice. Part of it is they do not have to compete against HN, GoodGuys, or Bunnings with the ‘professionals only’ brand, but they universally comment on reliability and customer satisfaction.
FWIW one of the better Choice models in the ‘large segment’ is apparently made in China, and although it is a Big Brand for Evaporative Cooling, it seems no HVAC company wants to touch their split system.
Perhaps buying some things is not so simple as just performance testing.