Anyone who was hoping Prometheus would be another AVP really need to be put out of the misery...
It was another AvP. Let's compare.
1. Mr. Weyland hires what is supposed to be the best of the best on an expedition that he is funding. Like Prometheus, no one is told what is going on until they get close to their destination. The difference here is that Mr. Weyland in AvP has no problems being around the rest of the expedition, where as Mr. Weyland in Prometheus is hiding because.... no reason is given and nobody seems to care. Bonus points for AvP for hiring an good old actor to play an old man.
Conclusion: The expedition in AvP are going to explore what they hope to be a pyramid. Nothing concrete, but everyone is prepared to make a little history. In Prometheus, the expedition is going out supposedly to find the creators of human life on Earth from nothing more than a drawing of a tall man pointing at stars. There is nothing about these wall paintings to suggest anything that they created life, but this is what our lead characters believe. AvP has the better motivation. They just wanted to find a temple.
2. When the team is about to set out, the lead female character questions why they would want to bring weapons along.
Conclusion: Prometheus wins because the team ends up not bringing weapons with them except for the typical survival knife.
3. They go inside a temple and get lost.
Conclusion: In AvP, the temple shifts around separating the characters, who make comments that they are literally in a maze. In Prometheus, the temple doesn't shift and the characters get lost anyways. But there is no reason for the crew to get lost because they have advanced 3D mapping systems on both their wrists and onboard the Prometheus who they are in constant contact with. AvP actually gives our characters obstacles to overcome, while Prometheus just makes the characters dumb.
4. Both Weyland's are confronted with the creature responsible for building the temple and what is killing every body. Both are killed by this said creature.
Conclusion: The Predator has no interest in killing Weyland at first, until he is provoked. The Engineer kills Weyland because.... I don't know. I'm giving AvP this one because AvP Weyland is awesome and Prometheus Weyland is just a water balloon.
5. The lead female character, the alien and the "other" creature duke it out. The end results in the alien and the "other" creature dying and our female hero walking away. Both feature an end sequence where an alien pops out of the "other" creature's dead chest, hisses at the screen and shows it's second inner mouth as it cuts to credits.
Conclusion: Both suck. Both really, really suck.
In the end, AvP has the better characters, better motivations, and way better editing by having it's action scenes actually make sense in the context of the film, instead of appearing out of thin air and never being brought up again which was the case with Prometheus.
AvP > Prometheus
I hate both movies, but there's no reason why Prometheus should have been worse, if not as bad as AvP.