I guess I should make a post for myself too. Get Malakaus to do something.
The New Yorker said
It's not less potent, but instead less addictive. Moon sugar is actually a hallucinogenic drug, like acid or ahyusca, whereas skooma simply causes psychoactive effects like more dopamine or serotonin.
EliteCommander said
Moon sugar's effects actually aren't nearly as potent. For Khajiit, it is used as a spice and it takes quite a lot to incapacitate one of them. It is quicker for non-Khajiit, but not nearly as quick as skooma.
The New Yorker said
The only reason I disagree with you is because you're conflating them. It be more potent but it's like comparing crack and acid, completely different effects.
EliteCommander said
It doesn't help that moon sugar's effects are inconsistent throughout the series.