koon decades pre-prime was casually collapsing caves and is one of the most powerful jedi in history, was considered a worthy test by tpm maul as of tpm(he had until rots to hone his skills) who at this time was a tier 8 putting him above tier 7's who happen to represent the peak of lightsaber combat and consist of the best duelists in history and feat wise has beat qui gon who has multiple accolades stating him to be one of the most skilled hedi in the order's history. Koon takes it