I disagree empathically. I have had much success with rifles, map control and AT guns. AT guns with long range using garrisoned troops, flares or other line of sight tools do wonders versus OKW trucks (yes, even the flack truck). In a pinch, sustained barraging with on-map artillery, the Scot or Pack howitzers (after the update) will do the trick. This kind of play rewards tactical positioning and map control, and punishes truly overextended trucks.
The off maps, by contrast, are easily used when rushing a tank at the truck deep in enemy territory and dropping the barrage in the LoS just before the unit dies. The tank in this example can be easily substituted by Paratroopers, pathfinders or any sort of "sneak around". Even in a failed attack the offmap will do the trick despite any bad tactics/unit compositions.
And I'll have to disagree. Due to lack of heavy early AT there is little risk in setting up extremely forward medic trucks against the US. By the time AT guns does come out OKW can already have their retreat point set up and it incredibly hard for the US to push off a OKW force constantly reinforcing.
While AT guns are effective there are lots of spots where the buildings can be hidden from them or atleast force the US to place them in ways that are extremely hard to defend. The pack howitzer does poor consistent damage and takes 2-3 mins to fully destroy a base giving a lot of time for OKW to constantly reinforce and attack the position and will eventually break down the american defenses from constant blob assaults from the medic HQ. Not to mention that the leig which comes in the same tier will counter both the pack and AT guns while being immune to counter battery due to constant reinforcing.
Then once the OKW player protects the medic HQ with the Flaq HQ it's essentially GG as infantry can't be far ahead enough of the AT guns to actual defend the AT guns effectively and makes tank flanks impossible due to the damage they would do to the rear.
The impossible OKW strat which I see attempted in atleast 50% of my matches against OKW:
Medic bunker with Flak within range
3 schreck volks
2 assualt pios
1-2 puppchen
1 leig
All set up somewhere in the middle of the map to easily reach both sides and shut down US mobility. No armor required. And heavily used in large team games.
The only counter to this combo is to destroy the HQs with off-map as they can take on any combination of US units thrown at them.
Omega_Warrior
Freedom.Kite(?)
Relic Entertainment
보드카 중대 
VonManteuffel 
