Alien for me and it's not close. I love how everyone thinks the Preds have "honor". No they are just dicks in my eyes. Think about it, the Predators are smart enough to make moral decisions. They kill People and Aliens just for sport not for food or reproduction like the Aliens. The Aliens are really the good guys in the avp universe, and by good I mean neutral while both the Predators and Humans seem to always have some devious scheme. The aliens just survive. Do we think lions are evil for killing a zebra to survive? no. I'd love for the aliens to get the "good guy" treatment in one of the films like the Predators do but I know that's a pipe dream.