FWIW we recently (as in a week ago) did SYD - ICN - CEB on Asiana J thanks to LM. I have to say I was pretty underwhelmed. It's a long flight at around 10 hours just to ICN and with no VOD we were glad to reach our destination. The rota of IFE was limited to say the least and while the service and food was good, the hard product was not. Mind you, I'm not complaining, anything above Y is always good by me, it's just that given the choice, I probably would not go that route again unless I had a requirement to stop in Seoul. By comparison, we also just completed TG J from MNL - BKK and the difference was chalk and cheese. The cabin service and layout was easily better as was the IFE and the seat comfort.
Both were 777-200 series from memory however Asiana do a kind of odd 2,3,2 seat config while TG go with 2,2,2.