I read back a bit - the German tanker who made that quote about 10 and 11 T-34s was Otto Carius. He wrote the book 'Tigers in the Mud'. He spent all but the last few weeks of his career on the Eastern Front. Great read, and it really emphasizes the Tiger's killing abilities against all sorts of Russian armor, including Lend-Lease Shermans used by the Soviets.
From what I gathered in the book, the Tiger crews feared mechanical failure more than any Soviet tank until the appearance of the JS-series on the battlefield.
As for US tanks, in truth, the only US tank capable of going 1 v 1 with a Tiger was the Pershing, but not enough of them entered service to alter the war.
That's not to say that other tanks weren't capable of killing the Tiger - but its not until the Pershing took the field that Allied tank crews were eager to go head-to-head against German armor.
I don't use Tigers anymore, I can't justify the cost in perks against the slight margin of survivability. That being said, I can't see how bringing another GV into the mix, like a Panther or Jagdpanther, is going to radically change things. Panthers were superior to Tigers in terms of armor protection (based on the sloped vs/ flat penetration formula), faster, more maneuverable, and with a gun that was just as effective as the 88mm in killing Allied tanks (the 88mm was truly overkill, when it comes right down to it).
Where would you put a Panther in the game, and what would you compromise? Protection, or main gun ability, to balance the gameplay? Would it be perked somewhere in between the Tiger I and Sherman, perhaps giving the Tiger a little more realisitic protection modeling and the Sherman a little less?
I dunno...all I know is that as long as a Tiger can be killed by a T-34/76 or Panzer IV, its not worth the perks to use them. There's no decided advantage to justify the cost. Not when guys are landing double-digit kills in Fireflys and T-34/85s.
J