Moving the two foam pads on RAAL ribbon tweeters one notch, i.e. 1/8" causes treble, mid and bass relationship to be rearranged fundamentally, far more than would be believed.
Sony is more hard core regarding sound than most companies imo. One of the few that are not stupid to make such a statement. Likely if we heard identical speakers with different finishes, we might agree. Also, testing was likely in SOTA sound room, and then I wouldn't doubt it.

