They keep claiming .85 for the 380 but the 744 overtakes it every night on the race to Europe. What it does have is a beautiful wing and gets up high and out of the way very quickly and allows the 747 free passage underneath. Interesting to note that Airway L759 (Bay of Bengal) has a .84 or more speed restriction on it now.(no slower than .84 allowed). The real 'roadblocks' that 330 thing is out on another track. Maybe there is a God, the start of 'Bus-lanes'?
I had my first pax ride on the 380 recently, have to admit, much quieter than the 744, very nice. With a 330 though it's quicker by car.