The poster of this video noted "don't dune in 4wd" and that's nonsense. 2WD is more fun,, but 4WD is more reliable against getting stuck.
No difference in the little SxS's IMHO.
Evidently the girl didn't have her helmet strapped and you can see it flying in the distant scene in the video.
Driver had no perception of Physics nor Geometry nor much dune experience.
Rule 1 in the Sand Dunes, be aware of Razor backs and witcheyes and avoid traversing them.