Sony's PlayStation 3 (PS3) will catch up with the Nintendo Wii in sales by 2011, according to analyst Piers Harding-Rolls.

Harding-Rolls told the Economist the PS3 sales surge will be based on the console's recent price cut and the availability of more PS3 games next year.

Despite its current lead over the PS3, Xbox 360 sales are expected to slow in coming years according to Screen Digest. The researcher predicts that both Wii and PS3 worldwide unit sales will double that of Xbox 360 by 2011.

Nintendo's currently leads this generation of consoles with an installed base 15.8 million units worldwide, followed by the Xbox 360 with 14.3 million, and the PS3 at 6.9 million, according to VG Chartz.

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