When considering the balance of firepower, don’t forget that many Russian sections had two LMGs, and 6 LMGs per platoon was not vastly unusual. An MG-34 or -42 is clearly a better bet than a DP, but I doubt it has the edge over two DPs.
Tactics-wise, the Sovs are on paper more sophisticated, using formations such as arrowhead, whereas the Germans only bother with file and line. I strongly doubt that this makes any practical difference.
I suspect that any Soviet junior leader who took the attitude “if in doubt, go to ground and wait for orders” would be straight off to a shtrafbat. As Zhukov is supposed to have said, it takes a brave man to be a coward in the Red Army. And if an attack was driven to ground, the Soviet rule, same as in the Tsar’s army, was not to wait for orders, but to renew the attack on the next whole hour.
All the best,