Currently the PS4 is the #1 Next Generation system in North America and Latin America and Europe/Asia
So it sold another 1.1m+ in just over a month, very impressive.
“I am thrilled that so many customers around the globe have continued to select PS4 as the best place to play throughout and beyond the holiday season," said Andrew House, President and Group CEO of Sony Computer Entertainment Inc. "We are delighted that according to the NPD Group's latest data, PS4 was January's top-selling console in the United States. The PS4 system's momentum just keeps growing stronger, and we are extremely grateful for the continued passion and support of PlayStation fans. February 22 sees the launch of PS4 in Japan, and I'm looking forward to Japanese fans sharing the excitement of the deep social capabilities and entertainment experiences only possible on PS4."