A man uses an XBox One while waiting to buy a console from a Microsoft pop-up shop at the Time Warner Center in New York.

The next-generation console wars are stalemated so far.

Microsoft said Wednesday that it has sold more than 2 million Xbox One units in the system's first 18 days of availability. That comes roughly a week after Sony said it had sold 2.1 million PlayStation 4 units in the first 14 days.