Grievous doesnt have his droids, in the season 2/3 forgot which season in an episode Eeth Koth was Pwning grievous but of course do you Grievous's plot shield the magna guards came and distracted Koth during the fight and Koth was defeated by the magna guards
Hm, fairly good question. We don't have a lot of combat feats from Koth, so it's fairly hard to judge, but it'd certainly be a closer fight at minimum.
__________________ "Happiness is a lie. Life is horror. The light is always dying all across the universe. The last star will flicker out someday, when it does, all that remains is shadow. And I will be its king!"'-Amahl Farouk
Huh? Koth already fought off Grievous with a wounded arm, whilst being intimidated by several magnaguards, then Force owned him. He only got captured due to the magnaguards.
Why would Grievous do any better in a rematch on his own?