For example, since OS4 apparently requires 24k party DPS, if your tanks do 6K combined and LBs do 700, it leaves 17,3K DPS for your DDs alone. That is 4325 DPS for each DD.
A PLD doing 3k DPS would currently rank 87%, a WAR 97%, and a DRK 92%. So your tanks would have to be in the top 3-13% of all the players for that job in the whole world.
For DDs, 4325 DPS would mean 98% for BRD, 97% for MCH, 95% for NIN, 94% for RDM, 93% for DRG, 77% for BLM and 75% for SMN. So for any of these jobs, they would have to be in up to the top 2% in their job. Of all the players in the world. (It would only require 56% for MNK and 31% for SAM though!

)
Now tell me with a straight face that it's completely fine to expect that kind of performance level from your DDs and tanks (particularly if you don't happen to have PLD, MNK or SAM in your raid team),
to literally expect them to be some of the very best players in the whole world, all 6 of your other party members, while you and your healing partner would take no responsibility whatsoever for DPS. Please tell me how it would be a reasonable expectation for the tanks and DDs and if they wouldn't somehow happen to succeed to be the world's best and wanted their healers to contibute, they would be "shifting the blame".
