That sight is not up to date and JP veterancy has been nerfed including the reload, at first glances it seem that is not included and that your number are off but I can not be sure.
The comparison of vet 3 SU-85 with vet 5 JP has number of issue which I will not going into and simply point out again that double XP is required.
Sort answer is comparing once vetted does not really help because the chance of missing is rather low and vet 0 the ROF is similar (while SU-85 has superior penetration).
Okay i shoudnt have brought up specific units. This doesnt help answer my question
Then does higher rof high on any tank or td gun ofset worse scatter?