Simply you cannot defeat Soviets with OKW.(at least currently)
Good guide tho I'll try it
This is simply not true, you can easily win fights vs conscripts with volks at range early game, and you will find concripts' equipment becoming obsolete before the volks'
Conscripts:
AT grenades, molotovs, [vet 1] trip wire flares, Hit the dirt [doctrinal], and the PPSH upgrade [doctrinal])
Volks:
inciniary grenade, salvage [doctrinal if thourough], grenade assault [doctrinal], and the Panzerschreck upgrade)
You will rarely get put in a situation as the OKW where you can't access a hard counter to a unit on the field, but your ability to solidify a strong, all-around force early game with capping power is abysmal. This is why you will tend to be in a reactive role against the soviets.
T1:
Clown cars? Early schrecks and 1-2 pupchens!
Penal spam? Get the Kibbelwiggin!
Snipers? Don't worry, It's hard to bleed the okw unless they hit your obers and sturms constantly. Just remember that it's there and try to force retreats if you can.
Sniper spam? decimate them with a fast Luchs.
T2:
2 AT guns or more? try to build support vehicles like the jagdpanzer (or the walking stuka if it gets buffed) instead of agressive ones.
2 MGs or more? Perfect! Use agressive vehicles like the jp4 or luchs and/or indirect fire
General support spam (especially mortars)? Build 2 ISGs. Barrage their mortars at max range. Barrage everything else. They are now dead. 'nuff said.
Shocks? Use MGs strategically to force them to waste munitions. Using your sturmpioneers at a distance, especially behind light/heavy cover and retreating them when they get close will drain the squad of health and men, possibly forcing a retreat.
Guards? They are elite infantry. Easy to deal with. Don't get a luchs and keep your tanks at a distance. They can effectively immobilize your vehicles for a duration of time. Be wary.
Tier three and four are a little more vague and situational and sum up to being different types of AT platforms + obersoldaten.
If you can push the game late enough or get enough fuel, you can use the oberkommando west's wider selection of late game armor to finally force the soviets to react to your decisions. I guess what I'm trying to say is that as long as you adapt to your enemy's strategy instead of trying to always take initiative and be agressive, you're in the clear.
I hope that cleared some things up/gave some insights.