Is Hell's Revenge really a test for any vehicle with 4WD and low range? If you play in the tubs, do the Escalator and a few other optional obstacles, yes. Otherwise I'd take my Dodge out on it and not expect any damage. My point is that Hell's has a LOT of traction. ANY vehicle with low range and 4WD will do pretty well on it. There's not a lot of ledges or other things to navigate that would be "rough" on a vehicle.
I'm not sure what trail to recommend to Jeep to prove to me that their new IRS/IFS soccer-mobile is worthy of my $$,$$$.$$, but Hell's Revenge isn't it. IMHO, a stock IRS/IFS rig will have all kinds of issues with any serious trail use. A solid axle rig (with decent tube diameter/strength) will hold up to YEARS more trail use than a "normal" OEM IRS/IFS rig.
This "Jeep" is built for getting to the ski resorts or making mom feel secure while she drives the kids to school (which is most of the market, unfortunately).