Hi,
I've struggled with the config on the various EK 777's now and in the past.If biz class starts at row 6(held back for kiddies so not visible in MMB) it's a 3 class a/c with rows 6,7 then galley then rows 8-11.
We fly LHR>>DXB>>BKK in Dec and two legs on 777/300ER one on 777/300 and finally A380. The 777 legs all show as 3 class in MMB(384 is not one of them by the way)
hope this is of some help.