With no rules in a fight to the death in hand to hand combat, the question has been answered.
MMA, Krav Maga, or any blend of Juijitsu, kick boxing, Wrestling is the superior no weapon fighting form only limited by weight/height/age/sex variables as the only nullifiers of superior skill level and ability.

6’4 unskilled male attacker destroys 100 pound super saiyan girl MMA expert. etc.

There is a reason cage matches once forcing all opponents to fight each other regardless of size stopped.

And no one is winning UFC belts with as Wing Chun or Praying Mantis experts.