I have read the original post several times and my considered opinion is that i have never heard one brand of speaker sound EXACTLY like another brand (unless they are re badged ) for example B&W sound different to Ruark so yes there are differences that are audible.
Having been in retail i often did speaker demos using the same equipment.

Weather its better or worse is down to opinion.

Personally the most realistic sounding speakers to my ears are the B&W Nautalis. There are lots of technical reasons why B&W say they are better but again that’s down to opinion.
All I can say is to me they sound "real"

Having said that because of the unusual way these speakers need four mono power amplifiers per speaker its hard to find other speakers that have these requirements to do a true A/B speaker test .and by the time you properly set up the second pair, moved the old ones out of the room you most probably forgot exactly what they sounded like.
To see the difference between technically and reality see here

[Link: remotecentral.com]