Westmere was on an HEDT platform. They compared mainstream platforms.
It isn't shocking at all the i7-8700K destroys all the quad cores in multi-threaded benchmarks. The single-core benchmark illustrates how little progress they've made: a whopping ~25% over Sandy Bridge. At they have made some progress. Hopefully Ryzen pushes them to advance things further with whatever Lake is their next architecture. I've lost track at this point.