For what it's worth I can vouch that Smith's list is correct (I would also add Comet spam and triple Schrecked PzGren blobs to the list of things seen in most 4v4s). I mostly play 4v4 AT with mates, and we hover around top 20-top 50.
I completely disregard experiences from 4v4 solo queuing, since it's a fucking wilderness out there, where strange beasts lurk and few men return sane enough to tell the tale.
I think nerfing the Elefant and Jagdtiger damage slightly is as good a way to balance them as any. It will double the time to kill a medium (3 shots instead of 2 means two reload cycles instead of one) while still basically keeping their formidable DPS.
