Let me try this again.
(I'll just assume you don't mean this as condescending as it sounds...)
I wasn't talking about merged or studio profiles but direct profiles. Your explanations and metaphors are good, but I understood all of this already.
What I was pointing out: Direct profiles through the Kemper Kabinet sound best with Kemper's speaker imprints. But the speaker imprints don't go through the PA. What the PA hears is the cabinet that I added to the direct profile even if I don't hear it through the Kemper Kabinet myself.
That means I need to make a choice: Do I want to get the best sound through the Kabinet or does the audience get the best sound. As I said before, the first option would be the obvious choice... So when it comes to live playing with a PA, I assume that studio and merged profiles are the much better choice than direct profiles.