But that's not how people game. When I play FPS on my MX Blue keyboard I don't make my fingers sit above the keys, but into the keys, depressing them almost until they're in the activation point. I'd guess people on linear switches don't do this, but they also probably slam their keys faster.

The "gaming" keyboards he used were also pretty shoddy. Now, I'm not necessarily saying gaming keyboards offer better latency, because that's not why I got mine, but his methods seem weird.