By the way, Ryzen in my opinion shows just how capable Samsung's 14nm process actually is.
It is really hard to compare process capabilities on the basis of a couple of point products. These two new AMD chips could have their frequency and TDP defined in a way that 90% of good die could meet them or only the very best 10% with the expectation of collecting and down SKUing the rest with follow on economy offerings. The latter scenario makes the process's capability look a lot better. It is also a lot more credible given AMD's ambitious (for them) pricing.
The specs of the high volume, low price Zen parts AMD will eventually sell will be a much better indicator how good their foundry's process is.