The New Tank Destroyers are worst than the ones unlocked Earlier. There’s no reason to swap to the new one, especially if we have to choose between the Panther and the Panzer IV/70
I am surprised they did not make TDs a second squad. In Moscow campaign light and medium tanks are two separate squads and T-50 belongs to first squad even if it appears later than T-28.
As much as I hate squad system with 2nd and 3rd tiers, in this case having separate medium tanks and TD squads would be logical, no mater what chronologically appears first.
They both have 150mm-ish cannon and heavy-ish front armour - 90mm for the ISU, 100mm for the Brumbar - ISU has better side armour, Brumbar reloads a couple of seconds faster.
dunno why the Su-122 (I presume you mean the T-34 based one with the 122mm howitzer?) and the StuH42 with a 105 would be considered more comparable?
The ISU-152 and Brumbar are rather comperable, and they’re more comparable than the SU-122 and StuH 42. They’re also more correct chronologically for Berlin; given both the Stuh-42 and SU-122 ceased production in 1943; and the ISU-152 and Brumbar are more competitive vs the tanks already available in game should they fight such.
Brumbar
Frontal Armor Rhae: 125mm
Side Armor Rhae: 52mm
Fire Rate: ~3 rounds per minute
HE TNT Equivalance: 8.6kg
Main Gun Penetration: 165mm (HEAT)
ISU-152
Frontal Armor Rhae: 105mm
Side Armor Rhae: 80mm
Fire Rate: ~2.4 rounds per minue
HE TNT Equivalance: 5.9kg
Main Gun Penetration: 250mm (HEAT)
Stuh-42
Frontal Armor Rhae: 81mm
Side Armor Rhae: 35mm (with skirt)
Fire Rate: ~5 rounds per minute
HE TNT Equivalance: 1.75kg
Main Gun Penetration: 115mm (HEAT)
SU-122
Frontal Armor Rhae: 70mm
Side Armor Rhae: 47mm
Fire Rate: ~3 rounds per minute
HE TNT Equivalance: 3.67kg
Main Gun Penetration: 160mm (HEAT)