Do you not see that his main is DRG? Assuming, that he was on his DRG, most people won't take DRGs for WP speed runs.
And remember, this is a DF party, not a premade party, you have to let the other people know that you are going to speed run. And honestly the tank should have looked at his party setup before he even attempted this.
WP Speed Run Information for the OP
Most speed run, groups consists of PLD, BLM, BRD and WHM.
WAR can replace PLD if they are geared enough but most people still prefer PLD for the mitigation and better hate management (flash spam is better cause overpower wake sleeping mobs).
Most party want BLM for their Flares and AOE sleep, a skilled SMN may be able to use Tri-disaster + Shadow Flare for slow, but there aren't many people that can do that.
They want BRD for the Rain of Death, MP Songs and Foe Requiem, DRG and MNK just dont provide as much utility or AOE as BRD do.
WHM because Holy Spam is amazing with the stuns, they can pretty much 1 or 2 shots the adds for the 2nd and 3rd boss.
A skilled and geared group can normally get it done around 12 to 13 min, world record I believe is around 8min
