Remember than suspension setup is very important and with new generation of chassis, this effect is more than before.
Last week, i riding with some Pro-ride RMK, some sled get on top more easy than other... i help a little boy with their Proride....trench trench trench.... i take the sled, i do better but i notice than a sled dont help to go on top of snow, why? too much FTS preload, too soft ski shock preload and too soft RTS... but when i tried the sled, suspension feel good, i notice the error when i put a small tie-rap on shaft rod for see the travel.
The right setup is hard to take with every contact point on a sled.
On Float shock, 5psi can do an notice difference, when you add Evol chamber, this great feature can do some headache.