
This thread is not about the movie, but about who is better/cooler/awesomer/etc.
I think Predator is way cooler, as he can do awesome things like instant-killing, infrared vision, being invisible and other things. Predator would also have destroyed Arnold Schwarzenegger (that name is pretty weird now I think of it: Black (BAN ME PLEASE), seriously?) if he wasn't so lucky and he easily destroyed 8 more of these guys, while Alien got defeated by a girl.
You could also think Alien because he has acid blood, can spread easily and most importantly: while Predator has lots of weapons, Alien is the weapon himself. Still, those people are foolish as Predator beats the shit out of Alien as you can see in the movies.