I wonder why you're trying to compare TJ vs JK arm lengths instead of comparing JK short vs long arm RTI scores with the same tires size.
Also, would love to see real time video of the JK on the slalom course, as evasive maneuvers at speed seems to be one of the things AEV really touts with this lift.
I have a FT LA 6" kit, absolutley love it long time on and off road, but do not look forward to having to avoid a wreck at 60 mph. Hell not even 30-40 mph.
My son would like a jeep next year if at all possible, and I would pick great/safe on road handling over anything else for him if we got a JK.