The seat is first and foremost. And I also include the cubby holes, privacy but above all whether I can get a sleep. Then the IFE and food about the same. I am yet to eat better in J than on QR. I was very impressed with the quality of the food as well as the flexibility of the dine-on-demand service. And even with a full A380 cabin, they still managed to serve pax as and when they needed to with little fuss and bother.