I got bored, so I did this. Those graphs are based on amazon most wanted list of several countrys (USA, Canada, UK, France, Germany and Japan). The amount of point is not going to translate into sales and everybody has to be aware of that.
That said, It may give hints on some kind of "general hype trend" for games/systems.
Now how I do that :
Every week (amazon most wanted list is updated daily, I am looking at system positions in the list in each country. If the system is first, it scores 100 points. If it is last (100) it scores 1 point. (if second, 99 points ; if third 98 points and so on...)
The average amount of point on the global graph is calculated by the following formula :
(US points x 3 + Japan points x 2 + Canada points + UK points + French points + Germany points) / 9 (I am trying to consider the size of the markets...)
A system can go over 100 if several SKUs.
I started this little game since February 8th 2014. I am tracking the 5 current gen systems.
So here is the global hardware graph from February 8th to now.
Amazon USA :
Amazon Canada :
Amazon France :
Amazon Germany :
Amazon UK :
Amazon Japan :