Where does this battle take place at? If it was in the south, there were no Ferdinands there. They were all in the northern pincer of the bulge. In the south the germans had mainly mkIV's, mkIII's and some tigers. So, I dont know why there are so many Ferd's attacking on the map, and it would have been nice if they would have given the Russians some Su-85's, T-34/85(there were a few at Kursk), and I think the SU-152 made its presence there...
Mike