At their peak.. I'm taking KotOR 3 Revan... The one who have quasi no story but he have an inpact on the canon because there is Revan holocron.. That have years and years of recording, because before getting dammage by the time (that is stupid because Revan Holocron is made with Rakattas technology, the same than the star map or the star forge, it's auto regenarating slowly with the time...)have at the origine every sith technic and ritual.. So Darth Revan the one taking over the republic didn't have the time to do so....
So we are assuming than this is KotOR 3 Revan who have written this. KotOR 3 Revan have defeatedthe emperor and mastered every technics, this not just theory like with Yoda cappble of using every technic in theory, Revan mastered them... And he don't refrain from using it....
Basicly he is at Sidious level at this point... Humhum..
Grievious count on Jedi pacificsm and self refrainingto win, he Jedi begin to use direct force attack on him.... He will just run away....