PLDs: You have Clemency for a reason.

[Reinhardt_Azureheim]

However...

The part where you responded to someone else...
Do you even tank?
Tanks have to manage their own dps rotation, mitigative cooldowns, mob positioning, dodging AoEs, etc. A tank, no, a player cannot be expected to maintain full situational awareness for everyone in the party. "Did the melee feint this add? did the caster addle this damage? did the ranged use their partywide?"

You come off selfish and spoiled expecting random players to cater to your playstyle in group content. Most competent tanks will know what the three healers can do and cannot do, but every healer played well can handle large pulls. It's just to varying degrees of effectiveness and efficiency. Just expecting someone you dont know to know how you play is not a good habit for any healer, no any /player/ to get into.

This right back at us tanks, are we supposed to expect that the healer is 100% responsible for us or is this also our job? I mean, it clearly is based on cooldowns, but if after cooldowns and your healer spending stuff as well he still might have issues, what is more important, doing 1x 525 potency / 375*n (n = amount of enemies) more damage or recovering 1800 potency of healing, stabilizing the situation?