*well i am dissapointed about them not showing the space jockeys real speicies (even though we all know it was predator) but i think that the predalien that came from the space jocky was killed by the other predson the ship and then they fought the queen but they died in the procces leaving the derilict spacecraft filled with only eggs until humans discover it in A1 another thing that bothers me the synthetic in A1 said that the alien was a perfect organism it was from the company and that means it knew about the predators meaning the aliens are more advanved pyhsicly than the predators!!!!!!!* Predators aren't Jockeys!
As for Ash saying the aliens being the perfect organism is a real joke imo! Since they were unarmed and have to confront it was the reason for Ash to frighten them; is not that i'm denying they aren't capable but come on, we all know the Predators are physically superior. Aliens though own few advantages over them. First one they have more natural weapons: Alien has claws, jaws, tails and acid when shred in parts. Predator has claws and jaw. Second one Alien can walk on wall and upside down. Predator can climb vertically very tall trees with his prey on him. We also see the Pred walking on his four limbs while crouching. Overall the Alien has a little more advantage naturally so to speak. Predator in the other hand is stronger and more resistant as seen in the trailer. The difference is made when the Predator use his gears. Now the Alien doesn't stand a chance. The Predator has a wide variety of weaponery(stabbing and energy weapons) ranging from short to long range. His vision will detect any who try to hide and his cloak will conceived him at least from the humans. 1 on 1 the Pred win if equipped. 1 on 1 without his gears the alien most likely(unless the pred is very skilled)