I think I've done more testing than you have. In a controlled lab environment at the University of Amsterdam as well as road testing for YEARS two exactly the same guitars but one with SS frets and the other with NS frets. I even have a log with the hours I spend on each guitar: virtually the same. And I don't squeeze that hard, either. and yes, I use the same strings.
Just trying to wash away the hogwash and bull****talk and replace it, as much as possible, with data that I actually measured and logged.