My coil group has always had the scholar healing the warrior on that boss. The warrior likely isn't playing right. In many cases the WAR I have been with on Turn 1 is easier to heal than the PLD. Your healers should also be interweaving heals anyway.
People need to stop claiming Warriors can't do shit. Yes, they are at a disadvantage and SE does need to do a few things to fix them, but it's mostly a player problem.
