Top 20 List Analysis

All the games in the blist are large franchises, apart from Dishonnored which is a new IP, however it is published by Bathesda, creators of Skyrim,, The game is likely to have had high sales numbers because the comsumers trust games that have been published by Bathesda. This chart also showes us that established IPs are more likely to make money because the comsumer knows the type of game they're getting. For example, despite Assassin's Creed 3 having a whole new gaming Engine and protagonist, people know that they will play as a hooded figure, hunting for Templar Knights, for the majority of the game. So it is harder for New IPs to get regonisition but when they do, they tend to be quite successful.
It is highly likely that the reason for Skyrim climbing back up the charts because they recently released new DLC, Dawngaurd.
It is clear that EA is a very popular Publishing company as they have 3 games in the top 10.
Need for Speed: Most Wanted, Fifa 13 and Medal of Honner: Warfighter. are all published by EA and aree currently in 4th 5th and 6th possitions. This shows that EA is highly established publisher.
It is clear that Games with exclusivity are lower down the charts because they are only available on one platform. Both, Assassin's Creed: Liberation, and Porofessor Layton: Miracle Mask are both exclusive to one platform. Professor Layton is exclusive to 3DS and AC: Liberation is exclusive to PS Vita.
It is clear that First Party games are still popular since there asre 2 in the top 20. Pokemon Black and White 2 (They ran out of ideas clearly -_-') and Forza: Horizon are both made by the platform holder, for the platform holder. Forza is made by Microsoft and Pokemon has also been made and re-hashed, by Nintendo.
It is clear that Sony do not focus on 1st Party games. There are Nintendo and Microsoft games but none from Sony.  They only seem focus on games that will get large amount of attention, for example Uncharted and The Last of Us has been getting some attention from various conventions . Both these franchises are owned by Naughty-Dog.  So Naughty-Dog is clearly a well love developer.