The standard sherman's cannon wouldn't do much against a Tiger imho. But then Im no WW2 GV expert..

The "firefly" on the other hand has that killer 17lb shell, which most definitely will hurt anything even a Tiger.
Tigers are like sniper rifles. The greater range the engagement, the better your odds (took on and destroyed 3 T34s on their way to my base yesterday in one).
In a up-close and personal fight though, a sniper always loses to the knife-man....

If the Tiger's a snapper turtle, the firefly's a turtle without a shell. It can bite just as hard, move better but lacks the protection of a tiger. So in a situation where a T34 would scratch a Tiger, it might just kill a M4.
The Tigers armor is tough but at close ranges can easily be penetrated especially at its weaker joints.
Perked GVs are just like perked planes. Expect to be the center of attention whilst in one, and keep every con at a yards length.
