Stop propagating this falsehood. The USF mortar currently has a longer setup and teardown time compared to the ostheer mortar (2.0 to 1.9) You also leave out the worse scatter and mid distance aoe besides the near distance one (1.5 to 2, 0.75 to 1).
Essentially, the USF mortar has no advantages over the Ostheer one besides (curiously) a shorter minimum range for smoke barrages (15 to 25). This is fine, it's a t0 mortar, and that's how that is balanced out. But don't pretend it is statistically better than the Ostheer mortar in any way when it is absolutely not.
I keep seeing this brought up but the faster teardown/setup myth is a holdover of when it used to be a supermobile orbital strike mortar, and those days are long gone. (and the old 60mm mortar currently in the attribute editor files, which I assume was the old mortar, has the exact same teardown as the ostheer mortar has currently)
I would not trust most places to find stats. Btw you got Vippered, jk . Anyway, all the good usf players know the mortar is a fuking trap. 1 may be used to clear a small garrison, but that is about it. You are far better off stalling for the mortar halftrack or pak Howie. Next patch, you will be better off using Soviets. Punish the silly spammers with a couple of snipers or clown cars.