I'm totally agree with OP
I have experience in premium cabin only TG F BKK-NRT-BKK,TG J BKK-ICN and same OZ741 ICN-BKK A380 J as OP.
IMO TG have better soft product bottle of minerals water,samsonite amenity kit.
Very surprised when I go back to BKK with OZ and have same experience with OP.
TG old business seat are much more space than OZ A380 but it is angle flat seat.
Next time I would definitely choose TG.