It's pretty cool... I would like to see how the US truck compares in articulation...
The M35 and later the M939, were designed to be driven on roads which limits their offroad prowess. OK, dirt roads but overall flat ground. I don't think they are as capable as the Ural 375D and other trucks like the Tatra, GAZ, etc... The Urals were build to drive in Siberia where there are no roads. They have a lot more tire clearance which helps a lot. Do a search on youtube.com for Truck Trials.