rate the sith

In order of people who could whoop DE Sidious

Darth Nihilus
Marka Ragnos
Naga Sadow
Ludo Kressh
Lord Simus
Freedon Nadd
Exar Kun, Darth Revan, NJO/DN Luke
Darth Traya

Revan?

Yeh wtf? Revan is so much of an unknown and most likely would get whooped by DE Sidious

Revan would get his ass kicked, most likely.

No, when you look at what Revan did, it is most likely he will defeat DE Sidious.

Like what? He's too much of an unknown. It's possible he's greater than DE Sidious, it's also possible he was far, far under him.