Oh yeah, and could you make the background in the graph a grid? It'd be easier to distinguish the actual numbers that way.
Anyway, great thread!
My prediction threads:
Wii U will sell under 40m units (made on 14th September 2012)
PS Vita will sell under 20m units (made on 30th September 2012)
Wii U will sell under 7m in 2013 - I was right