[citation][nom]bogcotton[/nom]But so much of the data is exactly the same from frame to frame, there is just a slight shift of the image with a little extra info.If this was coded well I would expect only a 5% performance decrease frame for frame.It just seems software guys have lost their artistic passion for coding.[/citation]
You're right, sort of.
For bluray video content in 3D, the 2nd video channel ONLY consists of the changes compared to channel 1, this adds less than 20% to the bandwidth/processing required.
However, for a PS3 RENDERING the 2nd channel in a game, its going to take up 100% more processing time, extra frame buffers, and potentially some extra RAM out of the paltry amount Sony stuck in the console in the first place.
Now you can be sure that the game developers will be able to work a bit of magic and not require a full 100% more resources, but its still going to be asking more of the current PS3 that it is able to give, especially at 1080i/p.