How much DPS does Selene actually add?

[Dwill]

SMN:
410 SS at 0.0.94 Stat Weight.
Selene would add 123 SS, which turns into +11.56 DPS. At half uptime, this is +5.781 DPS.

I really should ask Ariyala to change that value as it isn't true. Spell Speed is closer to 0,065 for summoner, which makes it even more worse. Summoner BiS builds are under 400 Spell Speed which makes Selene less than 1% of a DPS buff for summoners.