The PS Vita is off to a strong start in Japan. Famitsu reports that around 321,000 units were sold in the first two days following the Japanese launch on December 17.

The numbers are nothing to scoff at, considering the original PSP shifted 166K in its first two days. Both were released during the holidays as well. While this represents a considerable leap over its predecessor, the PS Vita still fell short of surpassing the 3DS, which hit 371K units sold during the same timeframe.

Nevertheless, it’s nice to see the portable wars heating up. It will be interesting to see how the Vita fares outside of the holidays and into the February-set domestic launch, which looms near.

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