Responding to that the company plans to release a 3D version of its popular DS handheld by March 2011, Sony's marketing director John Koller he believes works best in the console space.

"The amount of interest in 3D from the retail side and game publishers is off the charts," said Koller. "We know we have a hit with 3D on PS3 and we're going to concentrate our efforts there."

Well sure, you're probably saying, what else is Sony going to say? The company's lining up to sell ultra-expensive 3D TVs, after all, and wants you to believe 3D's the next big thing--even if it isn't.

Even then, Sony's probably right to be skeptical about 3D in the portable space. We're talking about screens--or possibly a single screen--less than 4-inches diagonally. It may look cool for a couple of seconds in a YouTube video, but could be distracting (in a bad way) or strain your eyes over extended play sessions.

Koller calls Nintendo's unexpected 3D gamble "an interesting move," but wonders if they've really got their demographics straight.