Because again, Soviets have a vastly different faction dynamic than OKW. I mean one could try this, in Kappatch Volks briefly had 3 Mp40s, it took all of 2 days or so to reverse it - it does not work. Mp40s are a downgrade.
Soviets are fundamentally different. But the problem for OKW would be early vehicles. The solution right now is Shreks. Shreks are making other things less viable when attached to Volks.
A snare and a Rak would be effective against light vehicles. And once techd up or JLI/Falls chosen then Volks no longer have an issue as they can be supported by HEAVY AI infantry. As if you put STs in every Soviet Doctrine.
The MP40s suck in this game. Period. The STG44 DOES NOT. If you simply made Volks as good Vanilla as scripts then like scripts you have a snare unit with an AI shelf life. But both can handle light vehicles so the problem is solved. Of course Volks will still get WAY better then Scripts with vet. So there is an added bonus. And not to mention Faust has always been better then the paid side grade that is AT nades.
So overall Volks would be MUCH better then Conscripts when all is taken into account. I dont see how that could possibly be problem. Unless you talk about another unit being better at everything then conscripts. But I have always thought Volks were better personally. AI alone does not make a unit good nor bad.