I'm sure we all agree that a lower CG is always more "stabilizing" in the sense of righting a car that is not already flat on the ground. But that's not what snovv_crash and I were talking about - we were talking about plausible handling characteristics. A CG below the ground will produce vehicle rolling motions opposite to real life. The outer wheels will lift in a tight turn, and the car will rear up when braking instead of pitching down.

There are only two forces involved - inertial forces which act on the CG, and friction forces which act at ground level. Swap the order, and you swap the direction of the torque.