My vote would too be the Yautja, but if you want to make this a story, like a comic, book, game, or movie, then naturally, the humans will win, they're the good guys, but if it were reality, my bet's on the Yautja.
~YOUR DESTRUCTION, IS THE WILL OF THE GODS, AND WE ARE THEIR INSTRUMENT~SUICIDE IS PAINLESS~FEET FIRST INTO HELL~HOOO-RAH~SELF-TRAINED WARRIOR OF BALATU~