The Xbox One is selling just as poorly as the Wii U did during the same period - perhaps slightly better, but not much. The Xbone is getting most (if not all) of the 3rd party software the PS4 is getting, but it's not getting the same amount of sales. I believe this is due to the fact that:
1) People are still bitter about the DRM policies Microsoft wanted to implement.
2) The Xbone doesn't have many first party exclusives.
That's it. Now, one could argue that the PS4 also doesn't have many first party exclusives, but the PS4 was certainly marketed a heck of lot better than how the Xbone was marketed. That extra push was all the PS4 needed to get to where it's at today. Of course, that's just for hardware sales. Software sales is another matter altogether.
Microsoft needs more exclusive titles. They need to set their system apart from the PS4. If they have a system that just resembles another one, but just less powerful, then they will never get ahead of the PS4, let alone, the Wii U.
