The samples I tried on the day, both sulphured & un-sulphured were dramatically different. The unsulphured sample was hard with an aldehyde finish. The sulphured sample fresher, but, closed. Aldehyde had been mopped up by the sulphur.
2 days later the sulphured sample has freshened and opened up beautifully. For around $20 you can get the equipment & sulphur needed to treat more tired old bottles than you’ll drink in a life time. If you have a lot of old wine in the cellar & want to know how to do, this hit me up via the Contact Page or in the comment below.
A full pregnancy ie 9 months on I’ve used this technique dozens of times to raise the yumminess of some wines to new levels including for a 1971 Grange vs St Henri Smack Down!