I really don't want the T-34/85 to be equal to the Panther. The reality was that only the turret and gun was upgraded, the hull was mostly the same.
However, the additions to the turret were substantial, it had a turret basket, positions for loaders, commander, and gunner, so a 3 man turret. In the 76 version, they would stand on top of ammo boxes to reach the 2 man turret controls. T-34 crews would steal the seats out of American supplied Shermans.
It doesn't take crack German training to load a gun quickly.
Increasing penetration to 160 will never do that and here are the numbers to illustrate the change:
T-34/85 finishing off a Panther: (960/160)*8.575/(40.74%) = 126.288 sec
T-34/85 (buffed) finishing off a Panther: (960/160)*8.575/(59.25%) = 86.835 sec
Panther finishing off T-34/85: (800/160)*6.45/(100%) = 32.25 sec
I think you can see that currently T34/85 takes 126 seconds to finish a panther and post suggested buff takes 86 seconds, where as the panther takes only 32 seconds to finish T34/85. The current difference is so insanely huge.
I hope that clarifies my suggestion.