Or you could just name his biggest win instead of avoiding the question.
Your idea of a biggest win is different than mine. I consider the best fighter a person has beaten as their best win. Franklin, Rumble, a KO of a prime Wanderlei Silva in under 1 minute. Destroying someone like Tank back in the day who was huge compared to Vitor. Gilbert Yvel, Akiyama.
These are all better wins than what you are giving.
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