It cant turn worth a hoot. Its not fast and even a goon can outrun it. It doesnt climb fast at all. It doesnt seem to be able to penetrate the thick skin of the tiger. Any vehicle with a single .50cal can usually kill it (dont ask me why).
It can often take more then a single hit from a flak. It can destroy a panzer outright. M16s and M8s are no challenge (with proper respect given the m16s guns). With sustained fire upon a tiger it will get credit for the kill even if it doesnt kill it. A lot of dweebs will ho it without thinking.
I think the positive side out weighs the negative.