FWIW, it really doesn't matter the size of the bore: if it doesn't sound good, has poor intonation, poor keywork and/or poor construction (quality), it's a bad horn.
For a player that tries something then moves on it can hold true. But many players find particular horns that have a very good reputation and then have a repair tech bring it back up to spec.
My Buffet A is a prime example.
A piece of junk as it wasn't even playable when I first got it .. barely sound at all, thus poor and stuffy intonation and stuck keywork thus a bad horn ??
After a top to bottom overhaul it now sounds great with great intonation and silky smooth keywork.