Disneyland’s Frontierland has a better Big Thunder Mountain, the explorer canoes, the Columbia, Farasmic!, and a lot less dead space.
Tokyo’s is aesthetically much more lush and better laid out. It is the one that is closest to Magic Kingdom’s and therefore ranks lower but it’s use of space is far better.
Paris’ is the best one to me. The most beautiful, the best BTM in the world, an actual live show in the theater, and Phantom Manor.
Hong Kong’s version is very separate thematically but Grizzly Gulch is absolutely beautiful in evert way.
Magic Kingdom has the lowest tier BTM (it’s good but not on the level the rest are), no live entertainment (unless you count the new Bears show I guess), a ton of dead space because it’s bigger than it needs to be, and a really awkward layout.