i have only once gotten a tiger in this situation ye, where i was already controlling most of the field. But then its not that big a threat (constant stalling with at nades and maybe a ram if really necessary).
Last time I took the tiger out with at nade, ram and an artillery shot (the ability, the artillery is commander specific). Then only two more shots were necessary in its ass.
I'd love to challenge someone better and see if I even get into late game.
Here's a replay.
http://www.coh2.org/replay/16351/irregulars-1