Per my earlier post, the beginning of this discussion should have been a blind test showing there is audible difference and then we could explore why. Asking members to prove there isn't, doesn't make sense. There isn't supposed to be a difference so why would we spend our time on it?
I am closing the thread as a result. Steve, you are welcome to create another thread if you have results of blind tests that show an audible difference. If you don't have such, then there is no audible difference to investigate and case is closed.