I happened to watch Alien vs Predator again just this weekend, and the poopiness of that poop is fresh in my mind. Alexa Woods, the Antarctic guide, was an okay Ripley surrogate, but holy crap did that movie show it's goofiness when she latched onto Charlie Wayland as a Newt surrogate. Even before that bizzaro development, characters were dropping leaden lines like pipe. One has literally only to view the first five minutes to see how dialogue is going to work in this movie.
A tech and her supervisor look at a data stream from [a satellite]
Supervisor
What is it?
Technician
It's the data stream from PS12.
SUPERVISOR
Big Bird. Where is she?
TECHNICIAN
Right above Sector 14.
SUPERVISOR
There isn't anything in Sector 14.
TECHNICIAN
There is now.
Dun-dun-DUUNNNNNN!
The most egregious though was that wholly crappy Hicks surrogate, Sebastian, literally spelling out an aphorism. "The enemy of my enemy," he says, and pauses, AND WE WONDER WHAT COULD POSSIBLY FALL NEXT FROM HIS GLISTENING LIPS. "Is my friend," he says.
But when we have to rely on an actual Predator for character development, the movie is just shit. Predators act out their hunter's code. They don't become buddies with future prey. And they do not stand around getting maybe hot and bothered about how capable the Ripley surrogate is and how maybe, just maybe, they might jump those bones with the flesh still on them..... yuckola with a pile of ew on top.