mass =/= moles. While it's stronger it's not 2x as strong. The nicotine salt which is either nicotine benzoate or (haven't seen it myself personally), nicotine salicylate, has, by nature of being a salt, more mass per mole of nicotine and these two salts are about 55% nicotine/45% salt by mass.

So 50mg/ml nicotine salt is 'equivalent' in concentration to ~27mg/ml nicotine freebase and likewise 25ml/ml is 'only' as strong as 13.5ml/ml nicotine freebase. You also inhale a LOT less from salt vapes typically compared to traditional vapes. Prior to the popularity of nicotine salts, I remember having friends who switch from cigarettes needing high concentrations; ~20mg/ml nicotine freebase which has a intense throat hit.

This explains a lot, for whatever reason I thought that the nicotine salt, was the same type of nicotine as the original juices, just put into a different salt based mixture.

I didn't realize the nicotine itself is what was different, and would explain how there are sub ohm salts now that only contain 3/6 mg/60 ml.

I did notice when I tried the Salt pods my friend had that were 25/50 that it did give me an intense head buzz, pretty much like smoking a cigarette for the first time. I think that inhaling less vapor is also beneficial in pods vs the sub ohm, and if I wasn't planning on quitting at the end of the month I probably would switch to the pods as it would be easier to smoke in public without annoying/drawing attention to yourself like with the sub ohm mods.

"25-50mg" is shorthand for "mg/ml"

The liquid in Juul pods is actually 59mg/ml. There's 0.7ml of the stuff in there, so the total pod nicotine content is about 41mg.

With roughly 200 puffs per pod, that comes out to 0.2mg per puff.

That makes a lot more sense thanks.