What's was your point with implying the much lower DDR3 cycle count when replying to someone that is talking about the latency having to do with the controller and not GDDR5.
It all depends on frequency, timings, amount of DIMMs, chosen controllers etc.
My point is that due to the obvious differences in the designs of DDR and GDDR that performance is quite different. It's an inherent difference and there's no need to throw a fit over.
I'll give you frequencies/timings but specific hardware differences don't manifest near that much in CAS measurements. As long as it's the same JEDEC standard, you can expect latency in the same ball park, other things being equal. Memory controller performance is largely normalized.
I missed that slide you where referring to. Nevertheless, GDDR5 clocks higher than DDR3, though, so "cycle" != "cycle" when being used as a measure of time.
No matter what the memory is clocked at, the CPUs FSB is what determines what the CPU will read at. PS4/XB1 use identical, somewhat lowish clocked CPUs. Cycles would be identical from the CPU side. The difference lies in what GDDR5 and DD3 does in a cycle.