Man are you wrong so lets go through it bit by bit.
I agree with Item 1 and Item 2 seems up in the air so solid conclusions are hard to draw, ultimately I would call both these items the same.
Item 3 is wrong on several fronts though so lets go through them.
1) DDR3 is faster than GDDR5 in some circumstances. Provided you are talking about memory latency here then I have to disagree with this statement. The GDDR5 memory latency is no worse and possible better than DDR3 latency.
Page 51 for DDR3 latency http://www.hynix.com/datasheet... - ACT to ACT is 45ns.
Page 133 for GDDR5 latency http://www.hynix.com/datasheet... - ACT to ACT is 40ns.
2) You cannot just add together the bandwidth like that because the job of the DDR3 and the move engines is to keep data flowing to the ESRAM as much as possible. That means the GPU will be communicating with the ESRAM most of the time but not all of the time. The true memory bandwidth will vary frame to frame depending on if the data is available in the ESRAM. We have no way of knowing what this will average out to but I doubt it will be much less than the PS4.
I would call the memory situation from a bandwidth situation a draw at the moment because we do not have enough information. It will require more developer work to get the best out of the Xbox 1's memory system though so I would give the edge to the PS4 overall.
Item 4 is totally wrong.
Yes the Xbox 1 has received a clock bump to 853Mhz and has closed the gap but there is still a gap. The Xbox 1 has 853 * 2 * 768 = 1.31 TFlops of compute performance (clockspeed * operations per clock * shader processors). The PS4 has 800 * 2 * 1152 = 1.84 TFlops of compute performance. The PS4 also has more texture units, more Colour ROPs and more Z/Stencil ROPs. The GPUs in each console are a class apart and that will show, either through higher frame rates on the PS4 leading to smoother game play or with slightly improved graphics.
Conclusion
Your conclusions shows that you are a liar. The GPU architecture is called GCN (Graphics Core Next) that defines the basic building blocks used to create the cards in the 7xxx series of GPUs.
There is no such thing as 'number of GCN's.
Considering we are talking about gaming consoles the most important part is the GPU so to try and play off that difference is minor when the other stuff has less of a performance impact is pretty ignorant.
