Hi, I just tried Kemper with a pair of Klein+Hummel 0300D with TAF´s Two Rock Profiles of the 35 and also the Classic Reverb.
Playing the Kemper on it´s own it sounds like a recording of the real amps and by far the best clean sounds I can find in the Kemper, but when I switch to the real amp it´s clear that it´s a much more enjoyable experience to play the real thing. More dynamics, 3D feel and that Two Tone Gunk/Tube sound from the real thing.
I can see that in a mix the Kemper could be an easy solution, but for the best playable experience the real thing feels much better to play.
Dammit - I really would have liked the Kemper to come out on top of this matchup - but no matter how I flip it - The real amp wins