Well, the obvious point is:
If you look at Sony's 'Big Guns' few broke 10 Million sales on the most popular console of all time. What this implies is that only a small portion of PS2 owners (say 30 Million) were interested in any of these games at all and a large portion of them were interested in the game because it was an excelent game on a system they already owned.
The reality of the situation is that the number of people who buy a system for a particular game (or a handful of particular games) is pretty small ...







