Without diving into specifics, Tokyos Magic Kingdom is an almost copy of Orlandos. There are differences, some big most small, but you would feel like you were visiting (and riding in) Orlando for the most part.
Tokyo DisneySea on the other hand has been often called one of the most detailed theme parks ever. It has many attractions unique to that park, but also quite a few clones from the US parks now too.
Disneyland Paris - I can relate since we`re taking our 3rd trip in April - is fantastic. Bigger than Anaheim but as a whole still on an intimate level resort wise. Disneyland Parc (the MK) is another park classed as one of the most detailed ever. It`s 1992 $2.2Billion budget just for the park shows. Each signature attraction was stripped back to the bones and re designed from the ground up to be the best, be it Animatronic, scale, music, or sheer size. Phantom Manor, whilst being very similar to the HM, is a very dark and well executed update. Big Thunder is on an Island (!) Pirates of the Caribbean is on 3 stories. IASW is massive. Space Mountain is stunning. You get the idea. The park is also more EPCOT sized than MK.
WDSP however was rather lame when opened. Small size apart, it did and still does have a lot of attractions unique to it - Cinemagique, Animagique, Armageddon (all worth your time) and newer additions of Crushes Coaster and finally the (same almost as DCA) ToT. It has the original Moteurs Action stunt show, and a Rock n Rollercoaster like you`ve never seen too! It is now a good day park in season. Speaking of which, DLP is very seasonal. Visit in the summer for longer hours and evening entertainment.
Perhaps I`m biased, and I`d love to go to Tokyo, but I`d recommend DLP to even the most die hard DLC or WDW fan (like myself)