That was some FANTASTIC crawling, by a highly skilled driver. You knew you didn't have the right line the first 2 times, so, you backed off before you flipped it. Once you had the front wheels and engine weight over the top, you knew you owned it. Huge tires aired down with REAL bead lock rims made all of the difference too, well done!
Exceptional driving skills.. usually people in that situation just pump the accelerator.. this guy is did it with great patience and skill.. slow and smooth.. high precision
I think it's more about low center of gravity and good approach, breakover, and departure angles than anything else. A stock two door jeep is more likely to do this than a stock four door.