It's a phenomenon that you have to experience yourself,
not expound about from behind a computer keyboard.
Go make over 2000 Quad Cortex Captures, and you'll experience at least once, the QC nail an amp's soul and yet, even maker it better.
The rest of the time, the QC just nails the feel, tone, and soul of an amp with every capture. And fast.
Proxy is way behind. Period. See any You Tube videos by Hi-Gain folks? Nope. That speaks volumes.
Perhaps Capturing/Profiling is not quite as simple as they assumed it was.