I‘m happy to chime in late to this topic.
Here is my view, made up as a little guideline. I know you guys are aware of every single fact, but I want to try to put those facts on a solid base for you, if you get trapped into an argument about sound
When the Profiler does not sound right to ones ears, then it might be about the profiles he/she is listening to. All profiles available are done by users, pro or semi-pro. There is only two handful of profiles made at the company Kemper. We rely on the cultural plurality of our users.
And if there is a tube amp that sounds better, then it should be profiled and compared afterwards, not before.
Usually everyone that state that his amp sounds better or different than the Profiler, without mentioning that he has profiled his amp already and comparing to this, has not profiled his amp yet.
Any digital guitar amp monitored through linear speakers should not be compared to a tube amp monitored by a guitar speaker (amp-in-the-room). If one states that a tube amp sounds better in comparison, without mentioning the speaker setup, then it is highly probable that apple and oranges were compared. Question it.
When two amp sounds sound the same, then they feel the same. There is no way how a sound would feel different for the player, but sound exactly the same for the listener.
The (assumingly) only exception to this is different latency of both sounds, which is only perceivable by the player, but not by the listener. We learned from you that the Profilers latency - while not avoidable - is about imperceptable.
When two amp sounds sound the same, than it is impossible that one sound will drown in the mix, while the other doesn‘t. If these sounds behave differently, than they simply do not sound the same, no matter what a pro says.
And yes, this might be about high frequencies and transients, as some users state in this thread.
If there were esotheric parts in the sound, that would make a difference in a busy mix, then those parts would easily be identified, when listening solo, especially for a pro.
Professional producers or mixers are not gods or scientists. Most of them are artists using equipment mostly created by scientists. And sometimes even the best make pseudo scientific statements, that they don‘t feel it‘s worth further proving.
This is a really great post, very incisive.
The part about sounds disappearing in the mix is really interesting to me as a user, since I have been guilty of suggesting that with high gain sounds, I always seem to believe there's more usable low end content when comparing a recorded tube amp vs the same profiled tube amp.
In that regard, Mr CK, there used to be quite a number of videos when the Kemper was just getting popular where users would suggest increasing the bass of a profile to compensate for what was perceived as less low end from the profile.
But I guess you're saying that's more likely user error during the profiling process?