The leader of the team responsible for Heavenly Sword reckons framerates are the culprit.
The problem is that to do 3D properly you need to render 60 frames per second, per eye. And at least a 720p resolution [per eye]. So in essence thats 1080p rendering at 120 frames per second, and the current generation can only process very rudimentary graphics at that spec.
I think the technologys limited now, so you wont be able to play stuff that looks like Avatar the movie in 3D. Every generation has to be at least five-to-ten times more powerful than the last, so I think well get there in the next generation. I think that will be totally revolutionary for games.
The guy's probably better equipped to make the point than us, after all he knows the inner workings of the PS3 better than most. However, his comments are unlikely to phase Sony, who have already pledged their support to future PS3 firmware upgrades that will enable new three-dimensional experiences for both Blu-Ray and PS3 games.
And according to technogy-site Ars Technica, the PS3's utilisation of 3D is some of the best around...