I was curious how the KPA reacted to picking dynamics compared to a real tube amp so I did a simple test. I made a profile of an amp, I recorded a riff into a looper, then I ran the looper into both the amp and KPA and recorded the results. To me it is so close that I can't really tell which is which, can you?
This is all picking dynamics, nothing changes during the riff other than how hard I pick.
https://soundcloud.com/tim-owens-2/amp-vs-kpa-dynamics
Or if you want to hear a WAV file: https://www.dropbox.com/s/j2z3twk4q1l05qx/Amp vs KPA Dynamics.wav?dl=0