2 glasses of wine could be 2 glasses, at 250 ml per glass, of a 14.5% ABV wine. This is a considerable, probably dangerous, amount of alcohol.
(In the UK this is described at 3.6 units per glass, or about 7 units per day. Safe limits for men are not more than 3 to 4 units per day, not every day.)
Or it could be 2 glasses, at 150 ml per glass, of a 10% ABV wine. That would be 1.5 units per glass, or 3 units per day.
That just accentuates his curious vagueness about the baseline he varied from.
A "serving" of alcohol is considered 0.6 fl oz, or 14 grams, of ethanol. People tend to overestimate what constitutes a "serving" of any food/drink, with consequences in line with the withdraw effects he experienced.
(In the UK this is described at 3.6 units per glass, or about 7 units per day. Safe limits for men are not more than 3 to 4 units per day, not every day.)
Or it could be 2 glasses, at 150 ml per glass, of a 10% ABV wine. That would be 1.5 units per glass, or 3 units per day.