>>11785974Wine is 0.99
Vodka is 0.97
so even if this were a problem the error would be less than 2%. Which is well within the error of a drunk downing a whole bottle of wine.
ABV is how many mL of pure ethanol is present in 100 mL of the substance. You are thinking of either alcohol by weight or volume fraction of alcohol. There is a reason ABV is the standard.
>>11786578It's a volume/volume measurement retard.