I just did a test with the Bloody Keyboard Comparison tool. While it isn't as reliable as using a high speed camera, the results were pretty consistent and stayed within a 2ms range, even when trying different keys.
Sharkoon Purewriter Linear: 11ms slower then Logitech G Pro
Ducky Myia Pro Panda Edition Cherry Silver (!): 10ms slower then Logitech G Pro
Rocccat Ryos FX Cherry Brown: 5ms slower then Logitech G Pro
All the hate against "gaming" branded hardware is unjustified. They actually DO perform better then office stuff. This is even a little bit sad. I really liked the Ducky. The awesome unboxing experience, the feel of the keycaps, the sturdy housing, the cool mousepad. Everything screams quality. Typing was a lot better then on the Romer Gs, these suck ass, they make my fingers hurt and I am misstyping more then on any other switch I have tried. However, no one can deny its superior gaming performance. 10ms more lag with switches that actuate 0.3mm earlier is just bad. The ducky is a working man's product and it is great as that. But spending 179 EUR just for work is too much, I am not typing all that much anyway. But for gaming, Ducky is inferior to gamer hardware.