Hi everyone !!
There are other airlines which offer full flat bed between SEA and Australia/NewZealand–CX, VS, NZ and even only a small player in this area–but has a good impact as it offers a full flat bed–GA ! So if you consider the Middle Eastern carriers which serves Middle East and Australia directly or with a stop–which offer also superior full flat beds like EY, EK and soon QR. So there is still a handful of other carriers beside BA/QF.