So the other day I jump into an LFR, it pops up 2/6 (which means I get do Will with a raid that has more than likely wiped at least once). We are waiting on two more healers so I inspect my monk co-tank (I am also BM) and cant believe what I am seeing. I send a very polite whisper telling him he should come here and check the guide on BM. He sends back "STFU, you don't know what you are talking about this is the best set up for monk tanks", I leave it at that. Anyways, he is using all these parry/stamina gems, reforging into parry, don't remember his enchants.
We wipe the first try because he died and the other boss starting killing off everyone. We down him on the second try but the other tank died right before the bosses did. I looked at my logs after and there was a huge difference. He took twice as much damage as me, took close to 3 times as much healing from the healers than me, had 1/2 the self healing that I had, and to top it off only had 16% uptime on shuffle.
This was the first time I have run LFR with another monk and gave me a good chance to see the differences. Running dungeons as heals I have yet to have a monk tank either. With monks playing like this player I see how we are getting a bad name with the general population.