I've heard claims being made that somewhere in the middle between these 2 sci-fi horrors there the exists the perfect Alien prequel.
While that is off course debatable on its own, comparisons could be made to see where one exceeded the other.
You may add things of your own off course, as some of you know these films better than I ever will. But lets start with the easy ones.
Overal best plotline and storystructure
Best interior and exterior ship design-
More interesting Crew/Characters-
Best design and overal use of Villian/Monsters-
The best design and use of Setting- ( LV or Paradise )
Most satisfying Resolution-
To give my own 2 cents real quick, I think Prometheus definiatly had a more interesting and unique premise. I think the 1st act is largely more superior than its successor, but that the second half of Covenant exceeds its predecessor.
I found the Covenant(ship) rather lacking compared the beautiful Prometheus(ship) though the second film utilized it better, having the final showdown take a place in there.
The cast and crew are largely interchangable to me, both felt like cannon-fodder to me, and I still don't know a majority of the names. Prometheus takes the cake for having Shaw as the more compelling main protagonist.
In terms of monster design and effective use of it, Covenant definiatly has the advantage of being more of monster/slasher movie compared to Prom.
But even then I think the Neomorph worked better than the Fifield-zombie or the Trilobite, and infectious spores seemed to have a more established set of rules of what it can and cannot do, compared to the Black Miracle Goo.
I have a lot more thoughts on the subject, but I don't want to put up a wall of text for you guys, so what do you think, I'm genuinely curious.