Neither.
Turns out Prometheus was first called Alien:Engineers and had decent script (it's online for those who like reading scripts).
I was so surprised the original idea got rejected that I gave up all hope for another decent Alien related movie.
Until Hollywood & Co get their act together, I won't expect much from remakes/reboots/spin-offs like this.
Here's a short article on how they ruined the movie.
http://www.cracked.com/article_20703...ost-great.html
An while I'm at it. They did the same to Alien 3 and Alien Resurrection.
Alien 3 was supposed to take place on Earth.
Link to the cript and teaser trailer for the movie that never got made:
http://www.cracked.com/article_19350...t-awesome.html