Yuri ,you r absolutely spot on .Japanese sexfight erotica is deeply underrated . Reiko Kobayakawa is a goddess whose range of BG,GG videos across genres is STUNNING .Her GG SF work is simply breathtaking.
There r an no of Japanese performers whose SF Work is stunning. Ill share the list in a while.

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I am confident Real Sexfights exist and ill share my points why
There r studios which produce choreographed SF's and there r studios who produce real sexfights. There is a studio called chickfight.com where performers compete in REAL sexfight matches.
There r erotica performers who participate in custom matches set up by lovers of erotica
Even in choreographed matches by studios like California wildcats or other studios where the winner is pre decided ,i am confident that at many moments during the scene ,there is sexual competition within performers .Its just human .

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