It is the Vet of PnzIVJ, not an upgrade to it. It has complete different vets than normal PnzIV.
There are many things we can do with it. Main-thing is that people test it.
In my opinion most imporatant are a. that it stats with skirts; b. aura gets an ability; c. that it gets more passive boosts.
So it can be used with more aggresion, while aura becomes more difficult to use, but it can support you main units.
If like that I think commander panzer4 vet bouns like commander panther will better,less or no bouns for itself but aura will be stronger