It seems they claim to cut out all of the bad, and simply give you the nicotine. But it is a concentrated liquid nicotine that is released. Too much in a dose, is technically deadly.
So in a sense its supposed ot be better, could be fatal, but its too new to tell yet.
It does away with the tar and carcinogens, and simply gives you doses of nicotine, and even vapor smoke to exhale.
Apparently they even offer Vitamin Enriched cartridges. So you can get your nicotine and a dose of vitamin B all in one shot. Or energy mixtures, or vitamin C, or so on so on so on