Oh yea, a thing on the Kolar-is-melee-focused front- Wolf Sazen is almost entirely melee focused. He uses the force almost entirely for sensing and precognition, and yet he's a powerful warrior with kills on his belt against powerful, more force-active/well rounded foes.
Sazen is inferior in terms of feats in comparison to Kolar or Vos. Vos has defeated Tholme, beaten Sora Bulq, beaten Aayla Secura, and beat Kruhk. Kolar ko'ed him with a boot to the face, and both fighters are considered among the best of the order. How does Sazen beating fodder Sith compare?
Nihl also has more melee wins, and his weapon gives him reach and leverage.
Not as much as Kolar's boot gave him an advantage over Vos 👆
And it's not like Nihl is unfamiliar with fighting strong TK users. Uses it sometimes himself (not a lot, but he has TK).
Kolar implements TK sparingly and depends more on the force for amping his movements. Nihl has never fought anyone who implements martial arts, and can kick out one of the best swordsmen in the Jedi order with a single move.