Really? Only 200k healing?

http://imgur.com/ODszQlx

I have done as high as 520k healing on a really long duartion fight. It's called, smart use of cooldowns and having healers to back you up so you can heal for longer. And no, it's not an exploit or a bug, Healers have 3 seperate cooldowns to use while they are being attacked, Surecast, Swiftcast and Equanimity. Pare that with line of sight or simply casting in between attacks, especially easy if only a BLM is targeting you since they have the same cast time.