Absolutely correct. Many demos of 'Bursts' deliberately AVOID and IGNORE neck pickup position. Neck position/pickup tone is an ultimate test - cause it reveals in first 5 seconds if the guitar does indeed have the original tone or not . By 'Bursts' I mean all of them - makeovers, conversions, replicas, 'near mint' originals, whichever the guitar pretends it has the original tone but it has not.
Listen to Duane and Dickey on At Fillmore East. Listen to Dickey on Wipe the Windows, Check the Oil, Dollar Gas.
download Gary Moore live at Montreux 2010! That's Classic Les Paul tone!
Eric Clapton playing in John Mayalls Bluesbrakers on the "Beano" album
or Mike Bloomfield playing anywhere!
Common denominator is a cranked ampif you want to know what a Les Paul should sound like you need to listen to Dickey Betts.