I personally love seafood so I find Japanese style imperial cuisine to be awesome. That’s just a personal taste

JAL western menu is a significantly better
JAL beverage choices are significantly better
JAL midnight meal choices are significantly better
JAL on board is significantly better
JAL comfort is better

The cabin never gets warm on AA because I normally don’t like having more than one glass of bottom barrel whiskey/wine but it does get warm on JAL after trying half their drink selection