It most definitely does. But a lot of alcoholics (functional ones) sober-up overnight. While they may not be at their physical best, they can still show-up the next day and mentally perform at near 100%.
Daily stoners can't do that. I'm sure they think they are fine, but regular (i.e. almost daily or daily) pot use leaves you in a fog that can't be shaken with a single night's sleep.
I dont know rob, I got baked last night and feel fine today, and have been getting stuff done that if I was hungover I would have said "fuck this today"