You are showing the attitude of four players and you don't have an opinion about it yourself nor did you try to remedy the angry outbursts those four tank players were having. Four players who are in a cranky mood does not equate a few good million tank players.
Now you are here asking us for sympathy so you can gloat about it. :
.
I'll tell you why tanks are so sensitive when it comes to heroics.
It's socially awkward types like you who don't have the slightest clue on how to handle a person who is having a tantrum for no reason.
That and hunters who for some reason don't have feign death and misdirect and deathknights who enjoy gaining threat over the tank just to show off their dps.