The SU-76 is a good AT and is effective At when build in numbers with additional utility of barrage
Everything is effective when spammed and you don't apply correct counter fast enough(CE flamer spam vs OKW 1v1 anyone?).
But in this case, you're paying 70 fuel for more mobile, less effective ZiS.
Puma costs just as much, arrives earlier, self spots without vet or constant muni expenditure, has self defense mechanic, has turret, can actually chase low health tanks and has a chance to escape them.
So yeah, there is same role package(light vehicle TD to engage lvs and meds) with much more utility then barrage.
The SU-85 has one of the best guns in game with good accuracy good ROF and good penetration, selfspoting and broken reckon when tracking is combined with focus sight, lower XP value than cost and great Vet bonuses. It is OP.
It has no turret, therefore it is bad.
This is what everyone says about StuG3 and JP4, so it must be unquestionable true regardless of other traits.
Should it be good vs Super heavies? yes
Should it be good vs both Super heavies and PzIV? no
And how do you imagine that should be achieved?
You can't lower nerf, because it won't be effective vs heavies.
Same with accuracy.
If you nerf RoF, heavies will be able to push through and it'll appear in pairs, invalidating P4s just as much.
Cost is already very high compared to meds.
So is pop cap.
Yet you have found minor problem with that stats of the unit...
There is plenty of units that had minor stat problem fixed and they suddenly became effective meta units.
Point case:
T34 coax and pintle MGs, cons dmg and accuracy tweak, PG timing.
Give it to the UKF or OKW or even ostheer and see how cost efficient it actually is.
The same can be said about KT if you gave it to USF or soviets.
Or pwerfer to brits.
Or Panther to any allied faction.
People who tend to play just 1 side tend to be completely blind to strengths of units, because they never go up against them and people who constantly face them see them exclusively too strong as they never see what they can't do. And I'm quoting example of both cases.
SU-76 does not need much, but to say its cost efficient unit in current state is insanity.