It's a coin toss for me.
IMO, Same or similar rides that are better at WDW (if I didn't list "similar" rides, I feel they are nearly identical):
Haunted Mansion: I like DL's more due to the elevator in the stretching room and the holiday overlay. but other than a little bit at the beginning, these are pretty similar.
Splash Mountain: WDW gets a slight edge with the side by side logs. but I prefer the animatronics and scenes at dl more. there are differences. Still give it to WDW by a hare (see what I did there?)
Tower of Terror: would have said WDW before the refurb at DL now they are really different rides, Mission breakout is more fun in my opinion.
Dinosaur (over Indiana Jones): really don't like Dinosaur much at all. too dark and too loud. Indiana jones is my fave hands down.
Soarin: I give this to DL based on the queue alone. I just prefer the athletics and location there. ride experience is pretty identical.
Nemo: subs at DL make this my preferred experience.
Astro Orbiter (because of better view being on top of the People Mover): wdw no dobut.
Same or similar rides that are better at Disneyland/DCA:
Big Thunder Mountain
Pirates of the Caribbean
Space Mountain, but the Hyperspace Mtn overlay is what pushes it over the top: that and the onboard sound system and the super smooth ride make it so much better for me. the one at WDW feels like a poor man's Matterhorn.
It's a Small World
Radiator Springs Racers (over Test Track)
Goofy's Sky School (over Primeval Whirl, although it's now closed for good): I agree with all of the above except this one. the rotating passenger section was always super fun. Sad it see it go.
To be fair, I did not ride Grizzly River Run, as it was pretty cool when we went, and I'm not all about getting soaked on rides. In all my trips to WDW, I've ridden Kali River Rapids exactly once. hmm... Grizzly river run is a great ride. I think I've only been on Kali once or twice. I remember how much shorter if felt compared to Grizzly so I have to go with DL on that one.