FadeToBlack&Gold
Microlot Marxist
It's all nicotine. Having done all forms of nicotine including early versions of vape ("e-cigarettes") 10 or 15 years ago, I wouldn't say it's more or less addictive in different forms. What it is, is way more convenient as a vape and therefore easier to keep a steady flow of nicotine in your bloodstream. For example, at your desk or on a plane, you can lean over, drag on your vape behind a cupped hand, and if you hold it in for a minute it's impossible to detect on the exhale. Cigars are just as addictive but much more difficult to partake in planes, elevators, restrooms, etc. without some Karen or Ken getting all upset about the smell.
I never really found cigars addictive, but I also never inhaled the cigar smoke. No way my lungs could handle that.