Eh, MMO lingo presumes that a "tank" class is supposed to take damage. Any tank crew that plans to rely on its armor to survive hits isn't going to live very long.
For what it's worth, I'd give an M1 better odds of surviving hits than a B2.
Being able to take unreal amounts of damage is sort of general to video games, and not specific to tank character classes. The medic in TF2 can survive more direct hits from a rocket-propelled grenade than a real-world battlefield medic, too.
Being able to take unreal amounts of damage is sort of general to video games, and not specific to tank character classes. The medic in TF2 can survive more direct hits from a rocket-propelled grenade than a real-world battlefield medic, too.