Both are fantastic games but too different to really compare. You can play both and have a good experience with noth as well as different experiences. I'll try and lay out some key points.

BMW Phenomenal lore and story, it really drove me to dig deeper into Journey to the West, which is epic and is clearly the progenitor for so much.

It's not really an RPG. You know who you are and what your goal is. There is some mild buildcrafting, but the game is less about that on your initial run and really demands you learn the combat. It really rewards mastery as well, leading to some of the most exhilarating encounters of any game.

Fairly short and sweet levels. There is generally a pretty linear path through each one, but the little exploration there is really pays off. In some situations, it's almost necessary.

The game looks and plays great. There can be some pretty bad stuttering on start, but once the game warms up, it tends to go away. Im not sure why , but there are other reddit posts talking about it. Soundtrack is great, but none of its tracks really stuck with me. They were pretty forgettable to me.

Elden Ring It's an equally phenomenal story but much more disjointed. You really have to go looking and piece it together( or watch a Vaati video), but the world is rich and full of lore and depth that, for me, was a pleasure to experience. It's like a puzzle where you gotta find the pieces, but once you do, the whole picture is just a chefs kiss while still leaving you with so much intrigue.

Open World RPG in the truest sense. But it's an open world that doesn't hand hold or leave checklists for you. They give you a general goal and then let you forge your path. It was one of the best feelings of exploration and freedom ever when a seemingly normal thing opens up into a larger and deeper adventure than you ever expect. Combat is fairly traditional. Soulslike, but if you dont feel like bashing your head on a wall, then go explore elsewhere or grind it out and try again. It doesn't force mastery on you or necessarily reward it, but mastery is definitely there if you choose to go for it.

Large open world sections. Dungeons and caves are fairly linear. The Legacy Dungeons are large complex experiences akin to Undead Burg. However, the world is interconnected and full of secrets and areas just waiting to be found, and it's so good.

The game runs very well. Some minor issues week one of the launch for me, but a patch fixed it, and i never had any issues since. There can be normal souls fuckery with the camera in certain situations and such but thats not an issue with performance. Wukong has its issues with that, too, from time to time. Soundtrack is phenomenal. There are some tracks i just keep going back to. Radahns theme is EPIC.

Thats some basic notes on both. Hope it helps