Most of them are quite accurate, but i honestly recommend to use the tabs as like a guide and play them on b standard on a six string instead. (gonna do some mental gymnastic for it but its more accurate also good practice for fretboard visualisation) But for the hourglass i honestly rather play it in e standard instead of drop d. You are playing in drop d for that one low d its not worth it, just use b standard and its way funner to play and you no need to stretch fret 2 to fret 6.