Downding, try this. Take an M16, find a Panzer (problem is getting within 50 cal range) then riddle him, won't take long to take out his tower and tracks from 1000 yards or so. I did it last night, couldn't kill him but disabled everything except the hull MG (which he eventually got me with as I started driving circles around him to teas him).
But it is still porked, 50 cal or Hispano plane can easily take out panzers. This is also the reason, I, and many others think that the Tiger might not be usefull at all as all that is needed right now is a P51 to come strafe it with 50 cal.
As for the question "Why The Tiger?" It is that HTC want something to spend Veichle perks on I think, and the Tiger is a good choice for this. Panther would be cool too.