Which is the third?!

Jk ;)

Which means they are testing purily for clockspeed.

Pretty much everything in the computer works towards improving the rate that things get to the CPU.  Most of what that superior CPU chart you pointed to can be attributed to a superiorly designed motherboard with more cache, larger bus, more memory, etc.  Every one of those things are designed with the sole intention of getting data to the CPU faster.  

CPU makes a difference with number of entities on the screen.  Like Dead Rising, or Lair who boasted about having thousands of npc's on the screen at the same time.  That was made possible by having a larger CPU.  Skyrim has none of that stuff.  I get the feeling that the chart you posted isn't quite being honest there with how those numbers were put together.  

For instance, every time you change the CPU, you almost always have to change the motherboard as well.  They don't have much backwards compatibility with eachother.  Thus statistics that came from a change in motherboard, were attributed to the CPU.  

12 and 14... aren't those numbers familiar?

May be in fact PS4 OS uses only one core and XOne uses 2, so the engine has 7 and 6 cores to process.

Everething we know, from pictures, power consuption and discipation points to both having the exactly same CPU.

is obvius, the ouya

No! Get out of here! My console has a bigger dick than your console!

Yes of course it is the most obvious explanation.

But the problem is that even if we have worse case rounded up/down numbers (if real numbers were 12.4 and 13.5), it would not be enough to explain the difference if we suppose PS4 CPU is 1.6ghz and X1 1.75Ghz:

- 13.5 / 12.4 = 8.9%

- (1.6*7) / (1.75*6) = 6.7%

PS4 CPU must be still a bit overclocked from 1.6Ghz to like maybe 1.7Ghz to fully explain such a difference. And that is in the worse rounded numbers case.

It says 1 CPU performance, so the number of cores shouldn't be a factor.

However there could be many other factors beside CPU clock speed. If they increased the CPU specs from initial announcements they would probably tell the public.

Could also be one or more of these:

a) X1 RAM has much lower bandwidth which could impact CPU performance, especially if the GPU was also hammering on the RAM.
b) X1 CPU compiler is not as good as Sony's
c) X1 OS & System software has more overhead

In all though I had expected X1 would be faster on CPU since MS has been making x86 OS and compilers for so long, but I guess their last minute 10% bump in CPU clock frequency was compensating for some really shitty perf.

A dev in GAF said.

"Yes, you can get more out of the PS4's CPU than you can the Xbox's."

http://www.neogaf.com/forum/showpost.php?p=94264594

Well he didn't say if PS4's CPU have more clock but confirms you can get more from it.

Makes you wonder what's limiting it though.

Not enough details for an accurate assumption unfortunatly. :(
We need proper breakdowns at the kernel and OS level so we know what everything is without having to make any kind of assumptions.

Also, interested to know what i7 they used in those benchmarks and it's clocks as Haswell i7 should be far far far larger than double the single threaded performance.