they ran it as a production truck. that was their point. that it could handle it as a production truck. it didnt. they chose to sell g's like this for on road performance. they proved that the G in its production form is a compromise in the dirt too.
a rubicon in production form wouldnt have had this failure because it has sidewalls from the factory. the body may have fallen off, but thats a different story, sort of.
the point being, todays G must be altered from the factory to make this run, and that wasnt what they wanted to prove. if youre swapping parts, youre swapping parts, be it wheels and tires, or springs and shocks, or airboxes for turbos.