Better than the ref imo as far as the sand goes. Really well done.
The ref kinda looks like basic stretched perlin warped by the curvature. Particularly looks odd on distant dunes, which by the size of the lions most certainly should not be like 5+ feet tall lol
Lion King looks good in motion, but after getting a copy, I find lots that bothers me in it, laziness in continuity, inaccuracies from real world, etc. But I'm a perfectionist.
Shameless plug, my sand shader comes with a preset much like this megascan. Easily masked and warped. Megascan does look good besides the repetition in imperfections.