Major Mud definately is a factor when present in this game..pretty much zero mobility.
I just realized something...is he playing with Fog of War off?...or just for the screenshots
Even with ample aerial recon, fog of war on makes a huge difference.
I am making an alternate 1942 attack scenario, although the editor has almost zero documentation.. I always thought it was a big mistake to attack Russia in 41, the Germans should have taken care of Africa and the Med/Balkans first IMO. If it works out I'll do an AAR...I want Leningrad, Moscow and Baku year one!
It starts in April 42 and May is a really muddy month in playtesting so far.
edit: BTW, my bet is that the Para Bellum got his clock cleaned in Moscow.