Some people have attested to saying that sometimes it's those uber beginners, non fighter types, or complete amateur fighters who never even fought before that create problems for more experienced fighters. Reasons commonly stated are because they have irregular, strange rhythm, their form is wild and all over the place, and it therefore caters to the unexpected and difficult to read. Sometimes seasoned fighters get used to the organized form and control of other skilled fighters, and therefore they are in the loop with each other's rhythm and feel. Have you ever had like a beginner or non fighter amateurish fighter person punch or kick at you? Even though you are a trained fighter, it's strange to sometimes feel like something's off and be wary of this wild opponent. Why is it and can it be absorbed into a seasoned fighter's context, without the expense of lowering the seasoned fighter's skill?