I'm not asking for analysis of logs or anything, here, just asking a simple question, as I've had too little experience with Mistweaver healing capability either personally or second-hand, so I just need some clarification.
We had a Mistweaver monk ragequit our guild because he was healing less than our tank (who was, admittedly, a blood DK) and doing only a small fraction of the healing other healers were pulling off. This was on a multitude of fights in BRF, with different types of damage occurring to the raid - constant raidwide AoE, heavy tank damage, damage spikes, etc. On every fight, in every situation, he was not performing well on meters. His gear was basically the same as every other healer's, so it couldn't have been that.
When I asked him why he was healing so little, he told me that it was because he was focusing on only effective healing, to prevent wasting mana on overhealing otherwise he would go OOM very quickly. I checked meters, to see that he was actually overhealing more than the resto druids present, so, out of curiosity, I asked if he could try just healing when it was needed and not focus solely on what would be effective and what would not - I was curious to see his general healing output when focused on just keeping the raid alive and not much else. We wiped pretty quick that try, so mana shouldn't have been an issue - when I checked meters, he was still healing too little, and chalked it up to going OOM when I asked why.
He also refused to use Revival when it was called for by our raid leader - often citing it as "not needed" because other healers got everyone's health up eventually (at the expense of a good chunk of mana...) so it was, therefore, not effective to use it, even though his refusal caused a few raid deaths occasionally.
Anyway, I was stumped but maintained patience and politeness while I tried to help him out a bit - with mana issues, if nothing else. Eventually, he got mad at people questioning his healing, and ragequit - yelling at me on vent and leaving quite spectacularly.
Now, I ask: was I in the wrong? I don't really know how Mistweavers work and I'm aware that meters aren't always the best way to measure skill or effectiveness. Is mana such an issue for monks at the moment that focusing so much on effective healing at the expense of throughput is the way to go? And if one does focus on effective healing as a MW, should they be healing less than a tank, even if said tank is a Blood DK?
I apologise for my ignorance on this matter, but I really do want to know, so that if I was wrong, I'll know how to better handle the situation in the future.