Capping power is useless when they hold your cutoff.
I really doubt any of those recommendations would have changed the outcome of the round. Ok so if not mortars, what indirect fire weapon in t2 or t3 I should have gone with? Oh wait, neither those tiers have indirect fire. So skip the mortars and wait til Panzerwerfer?
Considering that the enemy was in multiple heavy cover buildings, really doubt my grens could have done much.
Erm, no it isnt? Plus you built them prior to your stuff being cut off. I dont know what you expected to happen when your first two units built are 2 mortars.
You are aware you dont need indirect fire to push, right?
Build 2 grens plus a mg and you dont have to push them out of any building, since you can just take the building.