[cialowicz]

Unless I'm misunderstanding something, I see a possible issue with the experiment setup.

> The start-of-input was measured by pressing two keys at once -- one key on the keyboard and a button that was also connected to the logic analyzer.

In order to get an accurate measurement, wouldn't you need to directly connect the analyzer to circuitry on the underside of a specific key, as well as the USB output, and measure the diff? The article addresses this by mentioning it's only possible to get average latencies with their setup, but I wonder if this is why the keyboard with the shortest measured latency is also one with an extremely low travel distance.