Using EncDPS when you have stuff like healers doing damage may actually lower your DPS in fights like T5. It means you spend a higher percentage of the fight not pressing buttons because they die faster therefore the time you are pressing buttons has less time to account for making mistakes. One mistake will have a bigger impact on a shorter fight then a longer one.

Total damage means nothing. If I do a fight with a PUG DPS and my total damage is 100k and then do the same fight with my static melee team mate who is really good and my damage is 80k that doesn't mean I did better or worse. Total damage done is a terrible way to figure out how good or bad you are doing.