I think there might be something wrong with your sample. Something in your chain might not be right. One of my main out had become defective on mine after a few years (Kemper took tare of that in an exemplary fashion).
I'm reading this thread coming back in my hotel room after playing an arena, so I had to chime in. If you want to "hear clips" of other people, just go outside; it's being used everywhere at the moment, from major recording engineers to the live circuit, the Kemper is literally everywhere in the pro world without you knowing it because it's hidden in a rack behind the fake Marshall stacks or on some number one hit where you have no idea it's been used. No need to prove that it's capable, just do your homework correctly and you'll figure it out.
One other poster had actually posted a sample, and respect to him for that. Your shrugging your shoulders and saying 'do your homework.' Do you actually have any suggestions? Line 6 was also used by major recording engineers and the live circuit. Whats your point?