I have been to Japan and the Tokyo Disney Resort three times and WDW only once since my first visit to Tokyo and that was mostly for Harry Potter at Islands of Adventure. With that being said I would currently choose to go to the TDR than WDW.
The Tokyo version of
Disneyland is a combination of WDW's Magic Kingdom and the original Disneyland. All of the attractions are in great shape. I never noticed an audio-animatronic broken or an attraction that needed a fresh coat of paint.
The walkways are huge, the World Bazaar (their Main Street) is definitely a bit bazaar because of the canopy roof and that the train does not go around the entire park. Tomorrowland is a bit old looking and needs an update.
The Winnie the Pooh attraction is one of the greatest attractions ever made. Monsters Inc. is a good attraction, but head and shoulders above what is at California Adventure. Splash Mountain is an entire land that envelops Critter Country like Cars Land does at California Adventure (the indoor queue is AWESOME). Big Thunder Mountain, is similar to the Disneyland version, but with an incredible finale.
Tokyo DisneySea is the greatest theme park Disney has ever done and I choose it as a close second to the original Disneyland. You can literally pay for a full price ticket and not ride one attraction and still feel like your money was well spent. Think of an entire park themed in the same quality as Cars Land or Harry Potter. It's breathtaking!
If I had I had only one word to say about TDS, it would be "original". I think Indiana Jones as the only non original concept, but even then it has differences to what is at Disneyland. Journey to the Center of the Earth, Voyage of Sinbad, Mermaid Lagoon (it's Bugs Land with a MUCH better theme), and Tower of Terror. Heck even the queue to Toy Story Mania will blow you away.
In regards to food, you have a ton of choices and the quality is better than any Disney Park. Flavored popcorn... Yum.
In regards to shows. UNBELIEVABLE and probably the best theme park entertainment that you can find. Only the fireworks would be considered weak, but I hear they will be fixing that soon.
Hotels are all very cool. The Disney Hotels are top notch, but can be expensive. The cool part is that the surrounding hotels like the Hilton and Sheraton feel like Disney hotels because of the level of service and transportation available to you. They even have their own monorail station.
The BEST part of TDR and Japan in general is that the people are unbelievably polite, kind and helpful. At TDR you will find Cast Members that exceed service on every level. They are the epitome of what every Disney CM should be like. The guests do not yell at each other or their children. IT IS AWESOME and they are fanatical when it comes to all things Disney.
DO NOT let the language barrier effect your decision in a visit to Japan. After the first day or two you will be able to get around with ease in Japan. At TDR its even better because everyone will go out of their way to help you (Cast Members and Guests) and you truly feel like you are having an experience that Walt Disney himself would be proud of.