I know what you mean, a battalion should be able to cover a 3-4km frontage. So, I leave all the distances alone and “squint” and assume that the Brigade is actually covering a 8+ km Frontage. For gae 2, I assumed that the follow on battalions had time to form up while game 1 played out, and were able to launch a deliberate attack.
I have been having great fun reading FM100-2-1 from 1984 and am trying to implement the Soviet tactics correctly. You are right, easier to do solo!
With good planning and execution on the Soviet side (luck is for fascists) They might be able to punch through 2nd Brigade and release the Tank Regiment, we shall see!