I dont have the stats in front of me, but the Panther would be a faster, more menouverable, and quicker firing than the Tiger in AH2
The Panther's 75mm gun would be at worst the same as the AH2 17lb'er in the M4 Firefly, the armor would behave very similar if not a tad bit better than the AH2 Tiger's (providing it is modeled properly), and its speed would rival the T34 (30mph v 35mph). Certain things cant be modeled by HTC that figured into the real world battlefield experience of the Pzr V, such as the less than steller transmission, etc.
If it were to be introduced into the AH2 realm, I suspect it would be perked the same as the Tiger is not even more.
However, I suspect the Pzr V is not the front-runner to be added.