The most common key switch for gaming oriented mechanical keyboards is probably the Cherry MX Red. Its actuation point is around 50% of the way through the key travel.
Buckling spring switches, membrane domes, topre (membrane dome + spring), etc. all have actuation points somewhere in the middle of the key travel, not at the start or end.
I think you may have some model numbers and/or benchmark numbers mixed up. I don't see the 6700K or 6700T in the charts in this Ars article.
I see a 7600K with the 637 score, but that lacks hyperthreading and has 25% less L3 cache compared to the 6700T, so it makes sense that the 17% frequency advantage is mostly balanced out (there's little IPC difference between Kaby Lake and Skylake).
Edit: Actually the frequency difference may be a bit off from 17%, that was based off the max single core turbo frequencies. I don't know what the all core turbos are.
Buckling spring switches, membrane domes, topre (membrane dome + spring), etc. all have actuation points somewhere in the middle of the key travel, not at the start or end.