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Xbox 360 in GTA IV 2-to-1 sales advantage over PS3

US retailer GameStop claims Microsoft's platform has claimed around 64 per cent of the title's total sales

GameStop has reported that 64 per cent of North American Grand Theft Auto IV sales during the first week were for Xbox 360, while 36 per cent were sold for the PlayStation 3.

The US retailer revealed figures, showing a 2-to-1 sales advantage in Microsoft's favour, to Newsweek's Level Up blog.

The figures are, in part, being attributed to the higher installed base for the Xbox 360, with NPD group reporting that 9.9 million Xbox 360s and 4.1 million PS3s have been sold in North America.

"There's a larger installed base right now on Xbox 360 than on PS3. So it's not surprising that there's going to be more selling on Xbox 360 than PS3," PlayStation's senior vice president of marketing Peter Dille commented.

"Having said that, we're really excited about the ratio. If I had an installed base advantage of 3-1, I wouldn't be crowing too much about a 60-40 sales advantage," he added.