[Flieger]

The Stadium Super Truck has a solid rear axle so the drivetrain torque is being reacted through the very soft suspension. He's also goosing it after a turn, one which he ran over the curb, to show off for the camera.

What winders is saying, I think, is that once the front is in the air you can't change the load distribution at all using roll stiffness. The front is constant and the rear is simply a function of lateral acceleration.

So if you are targeting a front wheel altitude by using roll stiffness what you are moreso doing is just changing how soon it lifts, and changing the balance before it lifts. So to get the front to lift less you shift roll stiffness rearward and this makes less understeer in the pre-lift regime. After the lift there is less rear inside load available to transfer so the front can't get as high.