Berserk wtf? Pole-axes have polestagger, reach, a Stab and don't havethe unbalanced tag....
The unbalanced tag isnt really that big of a downside if you know how to handle it.
Polearms lose 20 length with their grip, which makes the great axe exactly 1 point longer than the long axe.The other polearm axes are a bit longer ,but they are also a lot more expensive.
The Stab is actually not really an advantage.It has really low damage and can glance easily on heavy armored opponents, which leads to you getting fucked in the ass if you accidentally pull it.
Oh and I dont know the exact data, but the left swing on the polearms is really shorter than the right swing.Iam not sure about that one, but I think the 2h dont have that disadvantage(Wouldnt matter much anway).
The Polestagger really IS a big advantage, but again, the cheapest polearm axe is more expensive than the most expensive 2h axe.
If you want a comparable 2h axe, fine, take one of the old and buff it heavily, but make it also very expensive.Or just make a new expensive item with better stats.