Vaping doesn't have the exact same effect that smoking does. Dormouse already pointed out the reasons. Analogs contain carbon monoxide which lowers your oxygen level. I won't go into the whole science of it and spare you the Respiratory Therapist lesson. Suffice it to say that part of the "buzz" you got from analogs was from less oxygen getting to your brain, aside from all the other 4000 chemicals found in them. Nicotine also produces a kind of "buzz" because it's a stimulant. Using chew is a different method of nicotine delivery that reacts almost instantaneously. Vaping delivers the nicotine more slowly, so you rarely get the same kind of buzz from it.