All right, gotya.

Now which core does the PS4 have, GCN or GCN2?

Exactly... the Jaguar core just share L2 between them... each core is a independent unit.

Duplicated.

"AMD next-generation Radeon™ based"

I don't know what that means... can be some alias for GCN (Graphics Core Next) or maybe the next-generation Radeon (HD 8000 or GCN2).

AMD expect to release the first GCN2's GPU in Q3 2013... it's the same release window for PS4. Anyway the GCN2 is just a updated in the same arch... not a big change like HD 6000 (VLW5) to HD 7000 (VLW4).

But Nintendo is trying to sell a $350 console to a demografix that is expecting to pay no more than $250 for a console.

Meanwhile Sony can easily sell the PS4 at $450 to a demografix that is used to buy consoles at $400.

What part of thin air did you pull this out of?

I think that is a factor but I think that people are forgetting that the XBox 360 struggled at $400 in 2005 and 2006 even though the economy was far stronger ...

In relative terms, I think you have to (essentially) add $50 to $100 to the price of a system launching today to relate it back to the launch of previous generation systems simply due to the state of the economy; and I think a $500 console is less appealing today than a $600 console was in 2006.

The numbers correspond to the differences in GPU speeds between the consoles and since graphics performance is extremely dependent on GPUs, in most games the GPU alone determines the performance. (It's a little late here so I'm not sure if that came across as I intended to.)

edit: have to look over cpu specs again since i belived it was from a different family on the amd tree, i thought it was from the trinity tree not the brazos tree

thie issue with ipc still exsists an compared to both intel and even the older phenom line (man if this was a 6 core die shrunk phenom that would rock) it needs a higher frquency to do the same work which is why i see 1.6 as a bad idea and keep looking for info stating thats its idle speed (i really hope and belive thats true) 

on a side note I feel the use of x86 is two fold, one it will make development easier, two AMD cut them a sweetheart deal to use both GPUand CPU. AMD really needed the deal to help keep itself afloat and may have signed a deal with both of them to make hardware at a cost with absolute minimal margin. its a shame really i felt Power for the CPU could have worked out will if it was simplified on the sony side and made a quad core for both, spun a die shrink and enhanced a bit

Back when I was talking about the PS-Vita and 3DS I had mentioned that I think the typical consumer doesn't evaluate the hardware of a system when they consider the value of it, and for the most part they evaluate it based on what it is. A (relatively new) handheld gaming system is worth $150 to $200 for consumers regardless of the hardware that is in it, while a (relatively new) game console is worth about $300 for most customers. No matter what you add to the system, consumers don't tend to see increased value for a system beyond this ... With the current generation of consoles we saw this as the PS3 and XBox 360 started to see strong sales after they sold for (less than) $300 but struggled above that price.