Our bodies to not store alcohol sugar as fat. So from a fat cutting aspect, its the other calories that you worry about. I remember once calculating roughly that Wine stores about twice the fat of Liquor, and beer stores twice the amount of wine. Obviously light beer is better than dark. And be careful of those high calorie mixers.
And even though alcohol sugar is not stored as fat, they do get metabolized, and therefore displace the metabolism of other sugars in your system than may be stored as fat.
Also I find drinking leading to lowered inhibitions which could let one slip in their diet.
So if you are really serious, then just quit drinking, or moderate it; as others say in this thread.
"Grandma just called and ... said she doesn't want you here when she gets back because you've been ruining everybody's lives and eating all our steak."
-- Napoleon Dynamite