87% is the generally applied algorythm but it can vary a fair bit especially in the case of the 360 which would lean more heavily towards USA. February for example, the month that 360 beat Wii, PS3 was #1 on NPD Canada. In that month 360 was probably more like 90%-93% USA. I have a feeling we'll be seeing some relatively sizeable adjustments whenever we get some hard Canadian and South American data.








