I actually find it quite amusing how people are nitpicking about really minor differences, assuming that a perfect 1-to-1 copy is the best sound. Is it really? I mean, shifting the mic 1 cm or using a "famous" pre has more impact and would lead to an equally desirable result.
In the end it should be about the sound itself - the feel of it under the fingers. Why bother wasting time with A/B scenarios?
And for those who still are looking for an ultimate copy, as many already pointed out: Sure, the QC seems to be the better plug-and-play capture, but does anybody of you really think that with all the adjustable parameters in a Kemper you could not get to an equally perfect match?