Here is a comparison and analysis of the launch of the Playstation 4 and Xbox One regarding their sales numbers, marketing campaigns and reviews.
PS4 will be ahead in sales until middle of 2014
Xbox One has a better marketing campaign
PS4 will dominate Japanese sales over the Xbox One
PS4 will have more of the European market while Xbox One will have more of the North American market
All facts used in this video are linked in the description under the video.