Given that the Turm tends to take out Russian armor before it has a chance to fire and that to contend with it one must use AP ammo, I think it will still be a strong fortification. I will look in to adjusting the Panzerfaust damage against the Turm, so as to prevent it from succumbing to being pounded with faust rounds now that the Russian tanks should be able to combat it.
I will probably increase Russian HE damage as well, being as I shot the Turm with the 40 HE rounds that the SU76 carries and managed to get it to be black smoke and fire, but not destroyed. I'll increase the SU76 HE damage to 75 and T34 to 100.