I got it, but the worst Gibson SG I played was still better sounding and better built than the best SG copies I've tried
I've played a beaten up 90's les paul studio that was a bit acoustically weak compared to good gibsons, didn't have much resonance and still sounded killer plugged in
it had a duncan distortion, so it still sounded better than a couple others with the 498t (urgggh)
when I read people talking about bad gibsons, I can only think of bad setup (close strings suck a lot of tone in gibsons), old or thin strings, bad tuners and stock pickups (most of them suck on the guitars they come in, with rare exceptions)
I've seen a few bad finishes, multipiece bodies, but never shitety sounding woods, weird woods or materials that weren't supposed to be there, misplaced bridges or defective necks (things there are quite common in supposedly professional level asian copies, including japanese ones)
they surely don't have a flawless quality control like PRS, but if you ever find a "bad" Gibson, you can send it to me and I'll make a proper disposal 8)