Yesterday, 19:20 PMEffenNewbie
What type of buildings, ambient, OKW trucks, or bunkers?
The barrage range is 20 more for the 120mm. Autofire is 80 for both.
Somebody else did a comparison in cheat mode awhile ago. IIRC, they got did better against buildings with the 120 but the difference wasn't a lot. It may be a little RNG since the 120 is so innacurate.
OST bunkers, constantly used the barrage ability at range ~80. I think the normal mortar cleared it in one minute (although 2 and a half barrages needed) while the 120mm needed 1:30 or something. Not 100% sure about the exact numbers, but something like that.
I'm pretty sure they are worse against buildings since they fire way slower and have the same damage. Also scatter is worse on the 120mm, at least people have told so in the forums.