- Yes
- No
back in the day people agreed that Jagdpanzer IV has too much armor for being a BR3 vehicle - but today Allies and Soviets both have tools to deal with this vehicle - while Germany desperately needs a BR3 vehicle that has more than just 50 mm of BR1 armor.
two years ago T34 and Sherman would have massive issues dealing with Jagdpanzer IV effective armor of around 100mm (± depending on the angle and elevation of the vehicle) but today we have:
KV2 - can kill even Tiger II H
T34 57 - has 140mm Panzer IV like pen
M10 - can take out both Panther and Tiger I
and Shermans got better ammo some months ago, AP HE with around 100mm of penetration.
Panzer IV simply has too poor armor and gets taken out by Allied massive post pen damage in one single shot - not to mention it gets taken out by even BR1 tanks, while KV1 and such bully low BR Germany.
Of course that doesnt mean Panzer IV J/H is bad in general, it has infantry support benefits, I personally consider top mounted MGs as a massive plus for a vehicle, but in direct tank to tank combat it does feel weak.
Jagdpanzer IV would be a fair alternative.