PS4 and X1 shipped nearly 30 million consoles at the end of 2014 according to AMD

[Mr.Playstation]

CGI-Quality said:

Mr.Playstation said:
The problem here might be that AMD might be releasing shipped numbers from two weeks ago. This is just a possibility though, it could probably mean that either Ps4 and Xbox One or both are overtracked.

PS4 isn't overtracked, as it lines up with Sony's 18.5m figure by Jan 4. 

Tring not to start a war . But yes it seems that the Xbox one may be at fault here.