A complaint from a whiny healer

[Renthas]

For example, I had an excellent tank in duty finder, a warrior who didn't use his tank stance for boss fights. He kept aggro, mitigated damage perfectly for tank busters and made the run an absolute delight allowing me plenty of time to DPS. He got a commendation from me. However, not everyone plays like this or is geared out properly for it.

The next run however in a leveling dungeon I had a dark knight. This DK had decent gear for his level, but he wasn't ilvl and lvl synced down like me. While playing on AST and healing him during large mob pulls, I was barely keeping him alive while he was in tank stance. I was completely unable to DPS, I put a regen on him and I was spamming my most powerful single target heal and that was barely enough to keep him alive.

For the boss fights he didn't use tank stance and each auto attack from the boss was taking an absolute massive amount of HP from him. He was holding aggro, so I didn't want to seem like a whiny healer so I didn't complain to the group. To make matters worse, the DPS weren't lvl synced so the fights took longer then normal. I was spamming Benefic II so much that I went OOM during the fight even with regular usage of lucid dreaming, I had to use the ewer card on myself to regen mana instead of boosting the groups DPS.

It seems less to me like you have an issue with no tank stance and more that you simply had a bad tank. Maybe I'm missing the point too, but if he had tank stance on for trash and was getting absolutely murdered and no tank stance for bosses, the issue is that he isn't using mitigation cooldowns. Likely an issue with armor as well.