Sephiroth vs dark nihilus

Sephiroth is an overrated emo Kefka ripoff. 
 
Nihilus owns him.

Which version of Sephiroth?

Darth Nihilus would own Sephiroth   
but Sephiroth is still awesome 

What can Sephiroth do? I don't know anything about him.
 
Based on what I know of Nihilus, Nihilus wins. He killed everyone on a planet with ease and intentionally left one person alive.

Nihilus was so powerful, his very speech could kill. Sephiroth gets owned.

"

Darth Nihilus would own Sephiroth   
but Sephiroth is still awesome 

"

ninilus says hello  and sephiroth dies simple as that , death by words tough to beat lol