Which element?
For what it's worth, before I moved to Orlando, my family and I grew up taking annual or bi-annual trips to Orlando, and we almost always included Universal, including our very first trip. Universal has never resonated with me on the same level that Disney did, even as a kid, even on our very first visit. This is subjective, of course, but for me my preference for WDW is not simply rooted in wanting to relive my childhood visits because if it were, I would feel the same about Universal if it had impacted me the same way.
The element of putting us in the action of the story, but not really. I'm not quite sure how to express via a forum post, but the idea that us- passive riders - have somehow helped to find nemo, or done something heroic to save the day, when actually we've just been sitting on our butts for 3+ minutes. We didn't actually fight a dragon. Oh, a really dumb one was the bit about saving the fake baby elephant. I'm so glad they retired that stupid part of the safari! (Mind, it is great to talk/educate about wildlife conservation. )
I also think the bird show is better without the stupid tour guide character bit. The part of the show where we were supposedly helping - I think his name was Joe- get over his fear of birds. It was just so fake and canned and cheesy.
Your longer paragraph actually helps explain my point. Though again, what I was trying to express is perhaps a little too complicated for a simple forum post. IMO, early Universal - especially - very much lacked the magical quality that WDW had during that same time period. I'd certainly say it has evolved. Early on, Universal was too over-the-top. their water ride was too wet, their Cat-in-the-Hat ride was way too spinney/intense, plus a bit creepy.
but what I was really alluding to was the feelings we bring to the parks before we ever set foot in them. Before we ever set foot in WDW, most WDWlovers already have an emotional attachment to the Disney characters through the movies/animation. It isn't so much wanting to relive your childhood, as much as it is the tears we shed watching Bambi's mother get killed, or the pull of Wishing Upon a Dream. The Wishes fireworks show did a fantastic job of tapping into all the Disney emotions we carry from the films. The classic Disney movies and cartoons just did a fantastic job of real storytelling. There are some documentaries about Pixar that explain what I mean. Nemo wouldn't be good if Nemo's mom didn't die.
IMO, Universal only really finally hit upon the same kind of emotional element was when they added Harry Potter, especially Diagon Alley. It just
feels like we are stepping into the movie or a lace where magic is real. IMO, that's where the new Star Wars land misses the mark. I can't quite put my finger on why I didn't react on that emotional level. It just doesn't capture the magical
feel of Star Wars.
Universal isn't WDW, but some of their attractions, IMO, are excellent. Universal stopped trying to be always over-the-top, and now pay more attention to story and details. The staff also - at least pre-pandemic- also made a big effort to deliver great customer service.