Its a bit hard to compare in general. Once April hits, the PS3 will have been out in all countries (12 months prior).
Breaking the Wii down by country doesn't work so well, as its still supply constrained (look at the sales in the US recently for instance).
...
But the numbers in general can be used I suppose, when looking at shipment figures (etc).
Gesta Non Verba
Nocturnal is helping companies get cheaper game ratings in Australia:
Wii code: 2263 4706 2910 1099