New research shows that drinkers with alcohol use disorder display the same level of fine motor and cognitive impairment as light drinkers when consuming their usual excessive amount.
When they drank alcohol in our study at a dose similar to their usual drinking pattern, we saw significant impairments on both the fine motor and cognitive tests that was even more impairment than a light drinker gets at the intoxicating dose.
So at the "standard" drunk level of 4 drinks, alcoholics are less impaired, but when alcoholics drink more than that they are more impaired than a "normal" drunk person.
So alcoholics can have a higher tolerance for base consumption, but when they pass that they go straight to trashed.
That’s not quite right. Alcoholics do tolerate lower level of alcohol (4 drinks) than normal people. But once they get to 8 (which they do - remember these are alcoholics) they don’t get more drink than a normal drink person but they are more than twice as drunk as before and they are less drunk than they really are.
tldr they found in their study that alcoholics/people with AUD can drink 50% more (7-8 drinks) and be twice as intoxicated , as compared to standard drinkers and alcoholics at 4-5 drinks, where the alcoholics were comparatively much less intoxicated than 'standard drinkers' (I think this implies that alcoholics do have a tolerance to alcohol but tolerance is not linear)