Those figures are for the USA only by the way Maxwell, and indeed only include users who send their data to the Nintendo Channel... I can't believe you have only just found them as they have been there since the start (unlike the new version of the channel, which isn't here in Europe yet, which has the ability to view your own play time)
I have made a few threads in that past (and there have been others) about the times, I am suprised you didn't see them.
For instance I worked out a while back that Wii Sports had racked up over 1 billion hours (I think it worked out about 1.3 billion at the time)worldwide.








