I totally agree that there is a balance required, and that OKW should actually have more powerful or versatile infantry than average, as per their design. However they should not have more powerful infantry and way more infantry at the same time
- Cons 240
- Grens 240
- Volks 250
- Rifles 280
- Tommies 280
I have to admit I think 250mp is cheap for Volks, considering the complete lack of sidetech costs (aside from the truck, but that's not an optional upgrade, it's not like you can go without one).
Also while you compared upgraded Rifles/IS to upgraded Volks, I'm not sure that's fair because as I said upgraded Volks are often facing unupgraded Rifles or IS, and by the time Rifles and IS get their upgrades OKW also has Obers / Jagers / PFusils. In early game USF v OKW the discrepancy is just ridiculous, you're facing off a RE + 3 vanilla Rifles against a SturmPio and 3~4 Volks with flame grenades and at least one StG upgrade, and Cons vs. Volks isn't even worth mentioning.
Please tell me if there's something wrong with my interpretation but to me, although USF and Sov are supposed to have an early game advantage, it seems to me that OKW has both the best early game and the best late game at the moment (even if their mid-game is not as good).
If you want you can upgrade your Riflemen/IS almost as fast as Volks can upgrade their STGs. Some players delay weapon racks until mid/late-game but that´s not the norm AFAIK.
Conscripts shouldn´t even be in the discussion because in current state they are absolutly helpless against any axis mainline infantry. They do well vs Grenadiers in early game but that´s about it. The only setting in which they are borderline useable is maps with lots of CQC and PPSH upgrade but even then they require insane micro to be of much use just because how fast they die and how little damage they do at mid-long range compared to upgraded Grens or Volksgrens. That´s the reason why anybody uses Penals because that´s the only useful main-line infantry Soviets have at the moment.
OKW has bad support weapons. Raketenwerfer is very unreliable, MG34 sucks, no mortar. USF and Brits have good support weapons and tanks that are better value than their OKW counterparts.
I think when you consider everything you can´t seriously say that Volks are OP. They are just right in my opinion.