Gamasutra reports that, despite the Wii's breakaway sales success, some analysts are skeptical of the Wii's staying power. Other analysts are, of course, pointing out that many of the 'hardcore' titles are expected later this year. "[They] not[ed] that 31% of Wii owners surveyed in March said they expected to play the Wii more often a year from now, compared to 21% of Xbox 360 owners." At the same time, Nintendo of America's George Harrison is questioning the staying power of Sony and Microsoft. According to Harrison, the two larger companies 'lack the DNA' to move with the industry, and keep with the the demand for casual, more family-friendly titles. "'They're really good at reaching a certain customer, and have a real difficulty understanding how we succeed with the customers that we have,' said the senior vice president of marketing and communications. With the sales of Wii and DS hardware crushing the competition in the US, Harrison is confident that Nintendo could take up to as much as 50 per cent of the market for this latest 'next-gen' cycle."