Spoil tagging some TCW stuff :
he single handedly could've dropped grevious had the boy not called in his guards.
there is a reason windu took him to get sidious. In the book he lasted just as long as mace and only got distracted when he felt Anakin show up. He was openly considered one of the best fighters.
Yoda was apparently his master
Windu also sang his praise for his warrior skills
Kit Fisto
Those who have power should restrain themselves from using it.Kit Fisto Kit Fisto was a Force-sensitive Nautolan male Jedi Master during the final years of the Galactic Republic. Fisto was known as an expert swordsman, possessing some of the finest dueling skills in the Jedi Order. A celebrated...starwars.fandom.com
Don't sleep on kit.
Dude's right though, he's B tier if we consider Yoda and Palps S tier, and Obi-Wan and Dooku A tier.