I think it's not accurate at all! Let's see the details:
Overall Length: 73m
Height (to the vertical fin height): 24.1m
(from Airbus's webiste)
Overall Length: 70.66m
Height (to the vertical fin height): 19.41m
(from Boeing's website)
So clearly, though the wingspan is way bigger, the A380 is only a mere 2.34m longer than the 744. And also, both aircraft will feature a 3-4-3 configuration in Y-class. By looking at the 3D representation, the 747 looks like it has 737 fuselage width. It's impossible. Also, 3D model uses a 742, not a 744.
Hope this helps.