If you think about it, Kyle Katarn’s development as a lightsaber duelist almost mirrored that of Luke Skywalker; both received limited training by members of the old Jedi Order and their extensive combat experience molded them into exceptional blades beings in the New Jedi Order. And both Jedi were the reigning masters of Form V Djem So in that era.
In Kyle’s case, with limited training from the Force ghost of Qu Rahn, he defeated Inquisitor Jerec (who strength in the dark side rivaled Vader’s) and his cadre of Dark Jedi minions. As a Knight, he slew dozens of Reborn warriors and bested the Dark Jedi Tavion Axmis and her Master Desann, who was amped by the dark side nexus in the Jedi academy on Yavin 4. As a Battlemaster, he held his own against the Sith Lord Darth Caedus, who relied on his Force powers to defeat the legendary Jedi.