Can someone give me an in-depth explanation why Summoner is arguably the worst DPS?

[ViviAnimus]

Yes, unmerged is possible, I agree. Although unmerged I get around 510-530 on my BLM and Summoner should have an advantage in that fight. So it does show something, right?

https://www.youtube.com/watch?v=giL9WX_mLzQ
https://www.youtube.com/watch?v=yM9OV8lF4q0

On this parse, BLM scores around 30 DPS more than SMN, do take into account the following:

Fireweaving was unsuccesful most of the time
BLM parse is 30% longer than SMN (SMN went Oom)
SMN Parse does not have energy drain (which is a DPS loss overall because I wanted full DPS run)
SMN DPS would continue to drop bit by bit
ST DPS BLM is supreme and even more so with Selene

[Judge_Xero]

Yes, unmerged is possible, I agree. Although unmerged I get around 510-530 on my BLM and Summoner should have an advantage in that fight. So it does show something, right?

https://www.youtube.com/watch?v=giL9WX_mLzQ
https://www.youtube.com/watch?v=yM9OV8lF4q0

On this parse, BLM scores around 30 DPS more than SMN, do take into account the following:

Fireweaving was unsuccesful most of the time
BLM parse is 30% longer than SMN (SMN went Oom)
SMN Parse does not have energy drain (which is a DPS loss overall because I wanted full DPS run)
SMN DPS would continue to drop bit by bit
ST DPS BLM is supreme and even more so with Selene

Nice vid. You should give Ifrit a try and stand closer to get all those book hits in.

[scarebearz]

snip

On a single target stationary fight I'd expect BLM to do more.

[ViviAnimus]

On a single target stationary fight I'd expect BLM to do more.

True to a certain extend. Moving as a BLM isn't hard, at all. Even in movement heavy fights BLM kinda is better than SMN. BLM is imo better on every turn in Final Coil. And as I stated, the BLM sustain is a lot higher, SMN dps would still drop, no energy drain used to get MP back and BLM always has Selene. It is very obvious that SMN needs a potency buff to the extend that they should have higher ST. They simply don't.