Is Selene all that?

[Sidra]

Which then leads to my next point - Selene healing is "enough healing" to get through the content, why would you bother to use Eos who adds nothing beneficial to your or your party's DPS when Selene can keep your party healthy AND provide additional party DPS via buffs. This is one of a few questions Scholars should ask themselves when considering what Fairy they should be using.

4 person Dungeon - Whispering Dawn at pull. WD heals for the equivalent of 2 Physiks - which saved me 2 GCDs before I have to pop out of CS to heal. Thats 2 Broils, which is more than Selene's buff would have added to the pull. Next pull, Fey Illumination (Selene's would have been down) - that extra healing power saves me 1 GCD to heal - 1 Broil - Selene would have added nothing that pull.

That's why EOS is superior for 4 person dungeons, assuming the SCH is DPSing.