To be brief and to the point, there were a couple things I noticed when watching both films yesterday. I can’t really say one is better than they other as much as I can point out differences between them that might sway judgement.
Anyways.
One of the things I noticed was The Thing’s usage of music versus Alien’s lack of. While lack of suspense sounds made Alien move slower initially, it seemed that The Thing usage of music drove the story faster than Alien.
Alien’s budget was definitely higher and is reflected in the quality of the sets and scenes even though Carpenter’s film is excellent with little need to create an alternate futuristic environment.
Acting wise, it’s a draw imho.
The Thing comes in a pretty much is giving the viewer some form of action/conflict from the start and no real downtime. Me believes this makes it a more action thriller suspense than Alien
Alien’s pacing is more suspense, thriller, horror film than it’s action oriented.
Other notes include…Ripley has no ass at all.