In such case you should take 2 thinks under consideration:
- labor cost (which is higher in Japan than in China)
- quality and workmanship and components used in manufacturing
Since workmanship may not count so much, so components used in process may. In simple words it may be any issue that Chinese manufacturer used lower quality (=cheaper) components, while Japanese higher.... but it is not always true, because sometimes new components may be cheaper and have better quality at the same time: due to progress, found&solved problems with old one - produced in Japan f.ex... etc.
You can be sure only that Japanese version cost more to produce (labor) but you cannot be sure about quality of components... but this you can check among owners on forums. Plus Chinese version has warranty (since it is new).
Don't worry if it will be produced in Norway used will cost 200 USD (at least) and anyway will be made of Chinese parts ;)