I think QR never really loved their A380s. I flew it only once, but read many reports of course. Cant remember a truely enthusiastic report. And also my limited experience was disappointing in terms of food (80% identical to C class) and service (crew had a bad day maybe). I think QR very early set their sails on developing a product which makes F redundant..and they feel they have this product now. Actually, when it comes to the roomyness of their A380 cabin their 777 gives you almost the same space..sometimes with a neighbour, admitedly.