Don't mean to be bias, but I find that most non-asian carriers services are extremely poor. Yes, some asain carriers are poor but non-asians takes the cake.
My experience with UA from HKG-NRT was one of the worse I have ever seen. The F/A's were like kids in a toy store. Service? What is it? They were joking with each other, drinks came 15 minutes later, flirting with dead-head crews etc etc. The worst was with AN. I will not go into details but I can tell you that I would never catch AN again.
Best service had to go to CX, JL, SQ, and MU (China Eastern). Then again, it all depends which crew you get at the time.