you are playing against 8 healers ?, you are not going to kill them and they are not going to kill you, if they kill you it's just because you hardly suck.

Go as 8 in the circle, bump them out and sleep them if you can, get the flag and def it by staying into it, you win...
And to be honest, if you focus the same target with 5-6 dps you will kill one of them. Use CC, use burst like full swing and kill them all...

it's like blm doing sleep + LB combo, it's "OP", deal with it :/