About mortars.
Sov:
Scatter Angle: 8
Distance Ratio: .1
Reload (Max & Min): 7.5 seconds
Ost:
Scatter Angle: 10
Distance Ratio: .08
Reload (Max & Min): 2.4 seconds (soon 4 seconds)
That means the soviet mortar is about ~20 % more accurate, even on autofire.
Ost mortair firing 3 times while sov fire once. So fairly.