@Dynalowrider - here is the graph I was talking about -
I was just reading up on the Armstrong limit as well and you are right - many liquids and oils have a lower boiling point below a certain pressure. Its really intrresting to learn new stuff.
So I'm no physicist, chemist or botanist or shit any of the specialties you'd need to form an educated opinion on what's happening inside a vapcap, however:
As an amateur, my guess is that two things are happening:
A.) we're not vaping, we're pyrolising (Is that even a word?) (https://en.wikipedia.org/wiki/Pyrolysis)
B.) I'm assuming pyrolysis results in a dangerously 'complete' extraction - we're getting just about everything from the plant: THC, CBD, terpenes and god knows what else.
Hence the fuller high.
The real test would be seeing if anyone used to smoking their herb notices much of a difference, compared to someone used to vaping THC from concentrate.