I used to think so too, but apparently not. Ethanol is chemically the same everywhere, but there are lots of other compounds and different alcohol compounds in booze as well and apparently make a difference in your high and how much your head hurts afterwards.
Still, there is the information inside, that not just ethanol gets produced by fermentation, but also other alcohols and the main point was, alcohol is not the same as ethanol.
Huh. I didn't expect so much methanol to be present in booze! (Methanol is incredibly toxic, but ethanol is an antitoxin, so that explains why wine doesn't kill people.)
https://en.wikipedia.org/wiki/Alcohol_(chemistry)