"I understand what you're saying, but you have hydraulic cylinders applying pressure in the extend direction trying to keep the axle and power on the ground the best it can if a high draft load is trying to pull the front end off the ground. In your example you are leaving out the fsus system. "


That is because the fsus has no bearing on the example. But just for the sake of discussion, in my example of the guy lifting weights, you can put springs (or cylinders with accumulators) in his knees and it does not make his feet push down on the ground any harder. The cylinders can only apply the pressure from the weight on top of them (the nose of the tractor). The nose does not change in weight regardless of the gap between the axle and frame.  The high draft will lessen the weight on the front which will change the weight on the axle, but again, the suspension is irrelevant.