I just wanted to point out a double standard...

[necrosis]

There is quite a difference between a healer who can't keep the tank alive and a DPS who takes two minutes longer to win a fight. One does not bring the party to the victory. The other does, but may take a little extra of your precious time.

What if that extra "2 minutes" is what causes the party to wipe because the WHM (even if at the top of their game) can not heal for that long?

I have been bitched out and called a crap WHM because the DPS are dragging the fight out so long I can not maintain MP to heal everyone.
I have also been yelled at for calling vote abandon on Copperbell (Hard) because the boss was at 30-40% HP when we ran out of stones. After trying it 3 times. The other 3 people could not get a clue they were seriously under geared and would not hear anything I had to say about it. Needless to say I ate the 30 min.

Not to mention doing 30 runs of Titan (Hard) in one weekend (all failing at the heart) I can now tell whiten 30 seconds of the fight starting if the DPS is up to snuff to kill the heart.

So yeah. There is more weight on the DPS to clear content than there is on the tank and healer. Are the tank and healer off the hook? No. But DPS matters more.