Why mark targets?

[C-croft]

Your comparisons are skewed.... Not saying the DPS of DoTs is wrong... Just that per global a DoT is more effective, but you get the efficiency over time. Early reapplication and the usefulness of the DoT is diminished. Whereas any other skill gives you full potency at time of attack and none is wasted. So yes a fight over the course of time will definitely benefit from the use of DoTs, but you would never spam a DoT in the first place. You would focus the rest of your DPS somewhere. On average you will have 4 GCD's between your DoTs depending on job. This is where marking mobs can come in handy. Marking mobs can reduce the chance of pulling threat if they follow marks.

Also, if you were to do nothing but weapons skills for your 7 cooldowns on DRG the average potency is actually 215.