This isn't actually true. Numbers from around the world are hazy but it looks like the 360 is ahead worldwide by a million or so. The lead will be extended over the holiday with Sony potentially surpassing next year since jan-sep are the months Sony outsells the 360 worldwide.
Indeed, in my completely anecdotal experience, the Sony products (PS3, PSP, Vita) seem far more popular overseas (especially in Japan) than the 360. Microsoft has had a hard time getting the 360 going in Japan.
That would make sense if you live in the U.S. The PS3 is ahead worldwide, but the 360 is winning by a landslide in the U.S.