Let me make this very easy. If the T-34/85 wasn't perked would you ever take a Panzer over the T-34/85? I know I wouldn't.
Why take a Panzer IV H over the M4A3(76)?
Does the Panzer IV H have some reason to be the top tank? How about the M4A3(76)? That has a better K/D ratio than the T-34/85 and is free.
Unless the T-34/85 is superior it should not be perked. If the Panzer IV H is inferior to the T-34/85 and M4A3(76) the reasons to take it would be one of the following: 1) you like the Panzer IV H better 2) you want to earn more vehicle perks per kill, but find the guns on the T-34/76 and M4A3(75) too weak and 3) due to ENY limitations you can't take the T-34/85 or M4A3(76).
Those are, you will note, the same reasons somebody might take a P-40E instead of a P-51D.
If the T-34/85's turret wasn't so weak, I'd have no issue with it being perked.