I think it's just that people have seen Aliens more, because it's easier to jump into it and have a good time, laugh at the "Game over man" scene, etc. Whereas

I think it's just that people have seen Aliens more, because it's easier to jump into it and have a good time, laugh at the "Game over man" scene, etc. Whereas with Alien you are on the edge of your seat the entire time. Much more draining. Aliens is a bit different from your typical action movie in that the heroes are getting their butts kicked the entire time. The only time where the heroes really had a fist-pump moment was when the 2 sacrificed themselves by blowing up a bomb and taking out a couple of aliens.