Your numbers are today pointless now Don, the Wii and DS from Nintendo are beating the snot out of the "other guys" as far as numbers sold go. The PS3 can only dream of moving this many units.This article is one year old, but at that time Sony held 70% of the console market in the US. Microsoft and Nintendo held 15% each.
Since that time Microsoft has made considerable progress, but I don't have exact figures.
Sony Might Lose 20% of the Gaming Console Market Share - Up or down with PlayStation3? - Softpedia