Too bad as DUS has been my base for the last 5 years. I was really happy when CX opened this route as I no longer needed to fight my way to Frankfurt Airport and back with Delayed Bahn. The pricing is also decent where I can often find DUS-HKG by EUR1-1.2k for PE (lower than that you only get Aeroflot). Even managed to get DUS-HKG-SGN by a crazy price of EUR800. I liked the A350 much better than 777 as well.
But my general impression is also that load on this route is light outside of peak days (Easter, Christmas, start/end of German school holidays), especially in J. I usually fly PE on this route and chances of being oped up were pretty high on those peak days. While on the other days, not even Y was full. My last flight in June back from HKG had only 3 other fellow passengers in PE. Without the feeder flights from AB, I can imagine that the situation can only get worse.