Current State of End-Game Contents - A Blog Post from A Japanese Player

[Gormogon]

Only 1 tank even in the party he dies at 30% they still get the kill.

Well that's not sloppy and a lot of players underestimate the value of the healer LB 3 especially bards.

A sloppy kill would be something you are most likely to experience in Titan HM/EX when you're left with 3-6 people and it takes an extra 4 minutes above normal to kill the primal and a healer LB3 isn't gonna revive those knocked off the platform.