How much it's an exact copy of guitars from 50+ years ago
Whether or not you own it/are trying to sell it. If you're trying to sell it, it sounds like angels and "plays like butter". If you covet it, there's just no justifying the price and it just sounds off to you in every youtube video you've seen.
The Guitar's Acoustic Tones .(including the EXACT amplitudes and harmonic content of the strings.
( does not mean you can always hear it , but its THERE on a 'scope).
Number , size of Strings and scale length, these are part of above actually.
Pickups and electronics.
The order of above may change depending on specific examples.
Super high output pickups tend to homogenize guitars somewhat, obviously so above NOT always in order BUT if you really
read the first one , it's what makes a Violin and Cello a Ukelele and A Strat and a Les Paul , a Bass, a 7 String what they are
and magnetic pickups can filter the results but not change one into the other.
Finish - Poly, Nitro, VOS, relic'd
Fretboard - Maple or Rosewood or Pau Ferro
Fret type - nickle or stainless, vintage or jumbo
Bridge hardware - vintage vs. stock vs, trem blocks, saddle metal alloy
All these factors add or subtract nothing to tone, but are good forum fodder