
Pirates of the Caribbean

Although both versions of this ride are a must-do at their respective parks, Pirates of the Caribbean at Disneyland blows the Walt Disney World version out of the water (pun intended).
For starters, Disneyland's POTC is almost twice as long as Magic Kingdom's. Both feature all the key scenes, but the West Coast edition has much more to offer, such as the Treasure Room in Dead Man's Cove. It also has exceptional storytelling elements with a clear beginning, middle, and end. Walt Disney World's version seems to start and end rather abruptly.
The theming is also substantially more immersive, and even sails you right through the Blue Bayou restaurant. This adds another whole layer of depth and atmosphere that the Walt Disney World version simply can't match.
It also features two drops instead of one, and an ascension back to the real world via a reverse waterfall.
In comparison, the Walt Disney World version needs to walk the plank!
Big Thunder Mountain Railroad

"it's a small world"

Just look at that enchantingly beautiful facade! This should give anyone a pretty strong indication about how much better the original version of "its a small world" is than its circus tent counterpart out in Florida.
When you compare both versions, Magic Kingdom's exterior seems inexcusably lazy and phoned in. It also can't compete with the gorgeous lighting that adorns Disneyland's exterior at night.
Disneyland's version also has a much more enriching history, as it is the original attraction from the 1964 World's Fair in New York.
With recent updates, we've seen the implementation of classic Disney characters such as Stitch, Woody, Ariel, Pinocchio and many more subtly blended into the ride. Walt Disney World is lacking in this area, but to be fair some hardcore fans didn't want this addition to begin with.
The Anaheim edition is also slightly longer, and features an undoubtedly more extravagant finale. It also has a holiday overlay, making it feel much more magical during the Christmas season.
Disneyland's version of "its a small world" is the ultimate experience after all!
Space Mountain

Space Mountain is an astonishing attraction at either park, but the apex intergalactic experience is out in Anaheim.
The Disneyland version feels much more dark, the track is insurmountably smoother, and the level of immersion is brought to a whole new level with built-in speakers by the headrests.
The vehicles themselves are also much more comfortable out in California, due to the seating arrangement being 2-by-2. At Magic Kingdom's Space Mountain, instead of feeling like you're traveling through space, most of the time you'll be feeling like you need to visit a chiropractor immediately upon exiting.
Disneyland's Space Mountain has all of these advantages before you even consider the fact that the ride has two incredible overlays. Ghost Galaxy takes over for the Halloween season and Hyperspace Mountain is a Star Wars extravaganza that is featured at various times throughout the year!
Disneyland's version of Space Mountain is out of this world!
Buzz Lightyear Astro Blasters/Space Ranger Spin
