According to EnterBrain, Sony outsold both the Xbox 360 and Wii in Japan last month thanks to two key titles from Sega and Capcom. Rua Ga Gotoku 3 aka Yakuza and Resident Evil 5 finished first and second in software sales which led to increased overall hardware sales for the PlayStation 3.

The rest is here:
PlayStation 3 outsells Wii in Japan