By no means am I saying it doesn't need a buff or a change butt..
Here is the run down of the barrages from that game:
-1st barrage, max range , no sight , blind fire,(hit nothing)
-2ed barrage. max range but knew where the at gun was..
-3rd barrage. max range. no sight, and i'm taking he assumed it was there because I know the grens cant see that far.
-4th barrage. compleatly blind, max range , no vision. manages to get a moddle this time

.,
-5th barrage, he kills the crew repairing and almost wipes a rifle, (1 moddle left and again fired from max range, so he got lucky.
-One of his barrages he was actually close range, but miss targeted(you have to admit that.)
He is using the werfer like a kat... and this is a perfect example , you need be close+ shot blockers + sight or pray to RNG Jesus , like barrage 5
Comapired to the easy use of Stuka or kat, yeah its underperfroming. but I dont agree on using this replay as a judge for strenght or weekness of the werfer