Some updated 2013 numbers after France announced 240k sold for PS4 and 126k for Xbox One.
http://www.gameblog.fr/news/40613-ps4-xbox-one-en-france-les-vrais-chiffres-de-vente
PS4:
US: ~2M
UK: 530k
Germany: 250k
France: 240k
Spain: 157k
Rest: ~1M
XBONE:
US: 1.8M
UK: 364k
Germany: 100k
France: 126k
Spain: 35k
Rest: 575k.
Looks like US is the only market keeping it close.
Yes, US is the only nation that keep XBOX one within a respectable range, helped by being also the biggest individual market. Its even more amazing when you consider PS4 is out of stock, or near out of stock in just about every major market. New stock for PS4 will come only in February in Germany last I heard.
That & its not launch yet in Japan.
XBOX is doing well, but have no doubt, that PS4 is flying, its almost feel like the old Sony PS1/PS2 domination era is returning. Hopeful that doesn't make them arrogant again.