I suppose a carto could equal a pack, if the person is the very lightest of smokers. The type that takes 4 or 5 puffs on a cigarette, and the major part of it burns in the ashtray. I don't know many smokers like that, other than my gf. She is a very light smoker. A prefilled V2 carto will last her a day and a half. For the average smoker, who takes 12 to 15 puffs on a cigarette, no, a carto doesn't equal a pack. It's a common advertising ploy that several suppliers state; and it's misleading.