As a healer how do you help under geared tanks?

[Stormrider]

Remember that PLD don't have access to Shield Oath yet but WAR can use Defiance, so Brayflox's Longstop is just one of those instances where WAR have greater mitigation than PLD. This might be the cause of the disparity you see (can't rule out gear of course). PLDs are going to be taking a lot more damage than WARs and have more difficulty holding enmity.

This is so right. Also PLD's have fewer hit points at this level. If I am on WAR in here its cruise control. On PLD you need to use cooldowns as soon as there up to mitigate close to WAR. Also the last boss can be a pain for tanks and healers sometimes. Also some newer players may not have patrol routes memorized. I would worry more after Stone Vigil. Bad tank there is probably just going to be bad Brayflox is still low considering the amount in the game.

[RumiP]

the last boss can be a pain for tanks and healers sometimes

SCH doesn't have leeches yet and poisons get to run their duration, which isn't hard to heal but in conjunction with people not avoiding stuff...