When I was playing through Eternal I was pretty sure 2016 was the better game, largely because I hated all the platforming in Eternal. Whoever decided that Doom needed a bunch of complicated jumping puzzles can go to hell. I also really disliked the lore changes in Eternal.
But when I tried to play 2016 immediately after, I realized how much better the combat actually is in Eternal. It makes 2016 feel a little dull in comparison.
Sack to crack, going to town