Against OKW it's fine'ish but the only practical counter to the AEC as Ost is either T3 or a Puma, both of which you'll be lucky to get at the 10-12 min mark. The solution isn't necessarily to nerf the AEC, just reduce the cost and the command point requirement for the Puma in the mobile defence doctrine and that would go along way to balancing it.
None of these changes deal with solving the OKWs problem with the early game. Early Jeep for the Yanks and Maxim spam for the Reds are the two biggest balance problems for the OKW right now.
I always laugh when I see this thread after yet another loss to maxim spam, Soviet apparatchiks saying the Stuka is a counter, that the infared half track is a counter, that the infantry gun is a counter. It's hilarious.
By the time all of these theory-crafted counters hit the field the damage is done and the map is locked down. They have the fuel, they have the doctrine infantry and they're well on their way to getting the first tank and I have nothing but a puny 270 mp panzershreck. Maxim Spam is a serious problem for OKW and there is nothing that OKW can seriously do about it.
Could pretty much close the thread at this. A supported Rocktenwerfer will lower the Dodge to the point where a Strumpio group can finish it off.
Going Rocktenwerfer as one of your first three units in OKW is a death sentence anyway, the limiting capping power and combat effectiveness kills the early start for OKW, who are already having a nightmare of a time at the start of the game.