Maia has done what he should have a couple years ago, and that's learn how to wrestle.
So Maia has just learned how to wrestle and was already able to outwrestle John Fitch, the wrestler? Maia didn't Fitch John Fitch. Maia Maia(ed) John Fitch.
What you witnessed was "creme de la creme" Jiu Jitsu overwhelming Wrestling.