Close, but faster. 5 seconds vs. 5.65 at vet zero. That matters because the Jagdpanzer is significantly more likely to get off the killing blow first, especially when it pens the SU-85 100% of the time but not vis versa. I'm curious why you felt the need to contest this point when it is correct?
The disparity is relatively small at vet 3, but significant once the Jagdpanzer reaches vet 5.
The reason I have pointed out the ROF is that it has been used as the "selling point" of JP over the cheaper SU-85. (The difference is 0.65 secs at vet 0 down to 0.05 secs at vet 3 hardly noticeable)
Sure the JP will beat SU-85 or FF or M36 if they decide to slug it out. On the other hand it not more cost efficient than SU-85 vs mediums while being significantly less cost efficient vs heavily armored targets.
In its current incarnation its it too expensive in cost and pop vs the units it good at countering Medium/TDs while being inferior to allied TDs vs heavily armored targets.