What does mean "a tonn"? 1 Su76 is probably enough in 1vs1 and next build something else. 1 Su76 will give you a good At and a barrage to fight medium.
I don't understand the logic Su76 vs Su85 when both haven't the same purpose.
I apologize, it seems that language barrier prevents me from expressing myself clear enough.
I've meant same amount resources spent on SU-76 compared to going straight to SU-85+Katys.
I think you get better both AI and AT with resources spent on mixed SU-85+Katys.
Yeah, you can say that SU-76 is kinda stop gap because it come to the battlefield much earlier, but SU-76 play is very reactive. It doesn't gives you shock value of opening attack with Katy barrage (or going T-70 or T-34 if we are talking about alternatives).
And if you buy one, you delay your top tier units for quite much which may cost you a game in the end. Maybe it worth the delay if you went T1->T4 because T1 have zero AT.
Well, it depends on situation and without having some replays we can only theorycraft. First month after patch will tell more.
Also I'm talking from 4v4 format perspective.
Use it when you have sight of something and I think you will find it a lot more reliable. It's literally the ZiS gun barrage but free.
My opinion based on barrage performance with line of sight and without one.
It's literally same unreliable crap as ZiS barrage but free.
If I use ability, I want some consistent effect. Hell, I'm ready to pay some munitions for that!