To much history of top tier performance behind the English guns making it hard to compare.
That's correct. Just like fine watches, incredible ones come out of Germany, but the Swiss will always have a rich history and pedigree that no one would capture. Britain is where these guns were developed and perfected over the past 200 years, and Fabbri, H&W, or Peter Hofer will never posses that magic. That's on top of the fact that every time one of those makers builds an O/U they mount the barrels on bifurcated lumps as designed by Boss and Woodward, and every SxS they make will have barrels secured by the under-bolt designed by Purdey, all being opened by the spindle designed by William Scott.