the prime focus on the thread is not the unit itself, but the barrage
while its TECHNICALLY a "superior" barrage, the zis-3 can fire shells out almost constantly, and three barrages certainly are better than one identical one.
the stealth doesn't even give an ambush bonus, so that's a waste
SU-76
The SU-76 has receieved a large number of changes to improve its performance. The firing cone has been increased, allowing SU-76s to be able to track targets more effectively and the unit will now rotate faster at lower veterancy levels. General mobility at veterancy has also been improved for acceleration boosts. The veteran ability has also been replaced with Camouflage, allowing the SU-76 to remain hidden until targets come into range.
Firing cone from 2 to 5
Camouflage delay from 5 to 2
Camouflage rotation penalty from 75% to 50%
Rotation rate from 32 to 34
Veterancy 1 Tracking replaced with SU-76 Tank Hunter Camouflage; +20% accuracy and +20% penetration on the first shot from camouflage.
Veterancy requirements from 870/1740/3480 to 1044/2088/4166
Veterancy 2 now provides +20% acceleration and deceleration
Veterancy 3 rotation bonus from 1.25 to 1.175
Can no longer crush infantry