Joe, my understanding is that when the distance from the frame to axle is getting bigger, you need a longer bar to compencate. Otherwise, the axle placement and axle behaviour is different from how it was meant by truck designers.

I did not broke the stock bar - it made some terrible noises on the trails but it was still intact and straight. But I definitely noticed big difference in handling between stock bar and long bar. I do not care much about theory, because I tested it in practice - my Rodeo can now withstand much higher lateral forces than with stock bar.