Originally posted by Lord Stark
A gesture is all fine and good. But Dooku nearly killed a Scourge level combatant with the tap of a finger, and she couldn't do shit. Not to mention ragdolling Kenobi, sending Anakin packing and deflecting redirected lightning from Yoda. I bet his lightning would be able to ash people on a DS nexus.
Ventress is good but she is no Sith Lord. I don't find her to be Scourge level combatant.
I am aware of that Dooku's feat but Ventress may have been caught off-guard in that time. In another confrontation, Ventress didn't end-up choked in this manner though Dooku soundly defeated her.
Dooku is undoubtedly very strong but so is Nyriss. The latter have spent decades as a practitioner of Sith Sorcery and have advantage in this manner.
We haven't seen much from Nyriss unfortunately, thanks to lousy writing of an author but we shouldn't assume that Nyriss cannot compete with the likes of Dooku.
Nyriss overwhelmed both Scourge and Meetra simultaneously, and I find this showing on par with Dooku's performance against Yoda (I am being generous in this case because Scourge and Meetra are both heavyweights in their own right and not to be underestimated).
As for the lightning, I don't think that Dooku is as proficient in its use as Nyriss.