Being a rival to Naga Sadow. His remains being described as a 'great evil power' that caused Meetra hallucinations so strong she actually had to fight them for them to dissipate. Being strong enough to easily shatter statues with a gesture. His bloodline being so strong that Exal Kressh was deemed a worthy apprentice to the Sith Emperor, a descendant who could tear a massive power generator apart.
Originally posted by ILS
Wyyrlok straight up murdering Andeddu with telepathy and being way above the two plebs who dropped a satellite on hundreds of Sith, strikes me as more impressive than Ludo's exploits, which include breaking statues and... yeah.
Not to mention obliterating Krayt's semi-lightsaber-resistant armor, and standing up to Krayt in a lightsaber duel. 👆