s/o fetal alcohol syndrome..

PginSA

I keep seeing that a single glass of beer or wine is better than hard alcohol. While that seems to make instinctive sense to me, i dont get how wine or beer is better. isn't it the alcohol content that creates the problems? surely a single vodka and tonic, if it has the same content as a glass of wine, is just as bad? i dont mean to create a flame war here - just wondering if anyone has read what it is about hard alcohol that is so different. i just assume that alcohol, not the other ingredients, is the real culprit?