Alright, I reacon that aliens are very cool because of the whole life cycle thing, nothing freaked me out more when i was a kid then those bloody face huggers, I reacon the predators are awesome because I just love the whole hunting humans for sport thing, and like collecting trophy's, thats just an awesome idea, and that is bloody original, a predator with a plassy gun could rape an alien, see them coming with alien vision, which sucks for the alien because stealth is it's strong point then blow it in half without lifting a finger, takes one l33t ass alien to dodge those shots and get close enough to get the predator, but a predator without a plassy gun makes it about even, actually the alien has the upper hand in melee combat, but the predator still has his disk-blade, remember that aliens can see right threw a predators cloak due to the feremone vision, so on a whole, I'm gonna say in a fight the predator would win in normal circumstances, but that doesn't mean that aliens don't own as well...