Robbie Bach, the president of Microsoft's entertainment and devices division, has said that he believes Sony is focusing on too many different areas - and is feeling the strain as a result.
Speaking to the San Jose Mercury News, Bach defended Microsoft's decision to introduce new music player Zune to market, rather than a new gaming handheld.
At present, he said, the company's priority is to make sure that, "The second holiday for Xbox 360 is set up right, that we've got the quantities we need, that we've got the games we need, and anything I do to distract those guys is probably a bad thing.
"I think Sony, frankly, suffers a little bit from this problem, which is they're spread really thin across all these areas. And trying to do PSP, competing with Nintendo, PSP to DS; competing with us, 360 to PS3, I think it does strain - it would naturally strain any organisation," he added.