That's the only word for it really. The Wii has outsold the PS3 a staggering 4-1 in Japan. I'm not even going to post the numbers for the lead it has over the Xbox 360 (the Japanese hates them some Xbox).
Considering that Sony has had the market wrapped up over there since the PS1 launched, this really is something to see. Maybe they're just happy that the king is back in town.