Yes and no; we're actually using a number of these terms rather loosely. But putting all that aside, what matters is whether the output of the looks like a relatively flat line on a scope (relatively clean DC), or whether it looks all chopped up, especially if that chopping happens at a low enough frequency to make it noticeable to the user when he's vaping. The Provari, DNA mods, and the MVP (and even the VV) all produce reasonably flat DC (despite the fact that there's "PWM" going on inside of them somewhere). Many of the other cheap VV/VW devices produce "chopped" DC, with many (but not all) using a 33.3 Hz PWM frequency to control their output voltage.