[MBCook]

I believe it was always designed for 3D but they made the 3D aspect more powerful as they saw what Sony was pushing. I get the feeling it was to be a sort of hybrid 2D/3D system instead of a straight jump into 3D.

But the multi-CPU thing was a mess. Sony had a very simple architecture that could still do a very good job. Sony made that mistake with the PS2 but still survived (momentum + sales as a DVD player) and the PS3 which hit them hard (Xbox 360 was much easier, got a big win for it). As of the PS4 they've learned their lesson.