BKK2 on 26 August 2008
Canada is close to NPD, but not the same. There is a big difference between GfK and the graph for Italy. We didn't get GfK figures for Spain through 2007, the figures in your link are from AC Nielsen, commisioned by Nintendo.
So the graph doesn't match AC Nielsen, GfK, or NPD, which is why the figures are probably IDG's own estimates.
Several sources suggest PS3 is overtracked in Spain, but this is the least legitimate one to choose to make that point.
