That's something you'll want to ask a manufacturer simply because paintball weight changes.
For instance, Kee paint could weigh 2.9g/ball while Valken paint could weigh 3.2g/ball. That may not seem like much of a difference between the paintball weight, but per case that's 5.8kg vs 6.4kg. So that leads to a skid of 742.4kg vs 819.2kg.
So that's ~1,637lb vs ~1,806lb.
So, like I said, ask the manufacturer.
You may call it fat, I call it bounce padding.