It really is more complicated than that... I now vape Hawaii Sunrise on 3Ω@4.8V (7.7W)and it hits perfectly... Earlier I was using my KGO for Snickerdoodle on 3Ω@~3.7 (4.5W) and it felt just as great (cooler vape, the warm cinnamon was not too intense, you know). I find Boba's comes into its own for my morning "smoke" around 3Ω@5.5V (10W), yet others may have completely different preferences.
Initially, the PAD-based calculation may be right, within some margins, for nicotine content. Later, I think the nicotine "fix" is much easier to get from pretty much anything.
But I still crave a good throat hit from time to time. Here is where voltage/power may be an issue in the beginning as well -- the 'tougher' the cigarette you are coming from the more likely you're gonna need that extra power. I have my doubts that a smoker of Gitanes sans filtre if you know them (I don't know a good American reference) would be satisfied by 3.7V vaping...