I'm the top healer in my guild, and most of my throughput on a good portion of fights comes from Atonement and Divine Aegis. I use PW:S regularly, and PoM, Divine Star, and Prayer of Healing situationally, and my cooldowns and "oh !@#$" buttons, but outside of that I sit on a rotation like a damage class would.
The 5.2 nerf to monk tanks hit us so hard it forced our main tank to reroll. Hitting a class so hard that a main raider has to reroll two patches in a row is ridiculous. At least if you're gonna nerf our healing to the point that a disc priest isn't a healing class any more, buff our damage so that we can be considered a damage class instead. With that nerf we won't have a role in raids at all.
I'm just bringing attention to this post because I didn't get to when it was originally posted for how ludicrous it is.
In 5.2, monk tanks were buffed, if anything. Unless you were burning all your chi on Chi Waves that frequently didn't bounce back to you, or more than half of your chi on Chi Burst I guess. Which meant you weren't Purifying, Guarding, and Shuffle was probably dropping off a lot. So yeah, if you were doing that you got nerfed.
But if you were doing that you were 1/10th the effectiveness of an actual honest to goodness drunktank, so...