Service
In the 2016 Skytrax airline ratings none of the US major carriers made it in to the top 20. Being a fright dog my company buys a great many businesses class tickets for me, however I will request to fly on EVA vs DL or UAL out of Taipei purely because the service is far superior.
The same is tru I take JAL or ANA out of NRT, again the service is superior and I get airline miles. UAL flew the whale out of NRT till recently, no personal entertainment in economy......
The asian customer has high standards and frankly the big 3 carriers has a lot to learn when it comes to customer service. 2 weeks ago I experienced a delay of more than 4 hours in ORD... no refreshments..no nothing! Compared to Korean out of ICN ... a month or so ago lots of food and drinks...and a shopping voucher for shopping onboard..... just my 2 cents