The Ryzen 5 beats your 2500K clearly in real life benchmarks, like games. Even when the 2500K is overclocked and Ryzen 5 is not. Example benchmarks: https://www.gamersnexus.net/hwreviews/2875-amd-r5-1600x-1500... (and this is by far not the most Ryzen-positive one).

> Again, if Ryzen/Zen is so amazing, where are the sales?

I'm under the impression that Ryzen is selling great. They had to sell Ryzen 7s as Ryzen 5s to meet demand.