wow really? thats horrible. and his percent is wat 100%? crazy thats less then half your shots will pen and sometimes u might not pen 2-5 times or more in a row then you throw in the misses like ground shot ect. maybe if the tank destroyers can pen 57% it might make it balanced i guess or make his target size so tds wont really miss it atleast.
Your accuracy at 60 is 91% (Jackson) or 100% accuracy (SU-85, Firefly). Half that accuracy against FoW JT.
As for JT accuracy at 70, it's pretty mediocre to alright. Slightly better accuracy at 60 but not by much. SU-85s will regularly be missed and this isn't even factoring in being shot at from Fog of War which halves your accuracy.
JT is nearly twice a TD in cost as well.