New Andersen WD hitch

Thought I would bring up a little issue. To me, this Anderson hitch does not work like a traditional weight distribution hitch. A true weight distribution hitch has spring bars that act like levers. They lift the back of the truck and distribute weight to the front of the truck and the trailer. This hitch does not do that. It looks like all that happens is you shorten the chain through adjustment until it is short enough to make a rectangle using the hitch head, the chain, the bracket for the chain on the trailer and the frame of the trailer. The tongue on the ball is the hinge that allows pivot until rectangle shape is present. I see that the latch would have pressure but probably not much since the weight of the trailer tongue is pushing down right there and that would keep it seated. The chain is in tension. The weight of the tongue stays on the ball which means it stays on the back of the truck.

I think this is more like a substitute for air bags because it does not look like weight distribution to me. Maybe I am wrong or missing something?