Overall LTD , VGC has the XB1 over by ~40k (4%) PS4 over by ~108k (9%) and Wii U over by ~200k (4%). The Wii U, even though its percentage diff is about the same as the XB1, it needs to be adjusted. 200k is a lot for the Wii U. PS4 also needs to be adjusted because it is very close to being off by a double digit %.
Won bet with t3mporary_126 - I correctly predicted that the Wii U's LTD at the end of 2014 would be closer to 9 million than 10 million. http://gamrconnect.vgchartz.com/post.php?id=6673287