Think about it as controlling movements. Without sway bars and without adequate shock damping, the body will flop side to side as the Jeep moves through the terrain. The weight shifts uncontrollably towards the downhill.
Add in antisway bars on both ends that also allow for full shock articulation and you create a system that tries to keep the frame parallel to the axles. When the axles articulate in opposing directions, the antisway bars work up keep the frame centered between the forces of the articulating axles. The movements created by weight shift are controlled. Controlled movement aids in stability.
Hey haven't we had this discussion before https://wranglertjforum.com/threads...gineered the Antirock,the weight on the tires.