In order to have they own servers there should be a big population which in this case doesnt seems to compare or even get close to the other Servers. EU consist of so many countries in Europe. North America is basically North, Central and South so it cover quite a lot of countries too. Japan covers most of Asia which include China that were added somewhere back around April-May, still Japan had always have one of the highest population in Final XI and XIV because the game was made in Japan and so many Japanese support this game.