And people still doubt Microsoft have problems of producing the same number of units like Sony...It's obvious Microsoft is sacrificing other markets to have similar stock like Sony in USA, UK, etc.
To put an example, if Sony have 2 million produced and decided to put 1 million in USA and UK, Microsoft had 1 million and decided to put 800k in those territories too. People will react believing PS4 and Xbox One have similar numbers, but that's not the true story. Sony is just reserving a lot of the ps4 produced for Japan and the rest of Asia (and other european countries where Xbox One isn't launching), while Microsoft is just focusing their stock in USA and UK.
PD: The numbers used, are only examples.