Two physical dps you mean, I don't think brd is melee lol. :P

Your kill order and pick up sound the same as my group, so that's not the problem. Are you tanks both Pally? If so I would say it's a cd management problem. We have our pally hold the Dreads and our war tank the adds, so he can't even HG.
But yes kill the rock with your physical, than get on the wave 5 dread, than to the OT adds and mage LB them. Is your Bard using Rain of Death to help your tanks? Are you using Virus on the Dreads with the other Blm? All this stuff helps seeing your damage isn't the problem.