There are more than a couple buggy aspects, but I still have a great time with it, esp when the bases are arranged such that 2 v-bases can can fight it out at an intermediate spawn, which prevents one side of the battle consisting of Tiger2's sitting on concrete
This is ridiculous criticism of the Tiger II's essential role; Guardian of the Map Room. A Tiger II is like the fat kid you put in the goal, because he is so big it's hard to score past him. The Tiger II is an anchor that is hard for any GV to get beyond. An M8 is all but useless against one, yet an M3 can drive circles around it literally faster than the turret moves. It is also great at giving mudhens the idea that they might actually score a hit on a perk tank, so they waste their bombs on concrete.
I can tell you first hand that it is also a fierce opponent in the field. I use it for HQ defense whenever a vehicle base spawns into our HQ, and I don't use it by sitting on concrete. I have had M4's at 20 feet try to turret me to no avail, while Panzers and Panthers shell my position from further out, and the Tiger II survived intact. I have been afield with one as our base flipped, and killed a dozen tanks and a half-dozen aircraft as I egressed.
No, the Tiger II does not just sit on concrete.