I see that the cannons of the STUG have the same stats as the ones of the Panzer IV with only the very limited AP shells having a greater velocity (nod to resuppply station campers then?).
So it sacrifices its cannon turret for carrying the same cannon as the Panzer IV.
This leave as its only advantage the 360 degree gunner turret.
As much as I love the gunner turret, when an anti infantry seat is the greatest strength of a tank destroyer I cannot help but wonder what train of logic does the dev team follow.
PS: IMHO the gunner turret should replace the exposed suicide gunner seat for all medium to heavy tanks btw and the tank destroyers should have a clear edge over general purpose tank in tank vs tank combat otherwise they are not worth their name.