You know, that's an excellent question. I've searched online to try to find oscilloscope pictures of a Kick in action, but failed.
I have a VAMO, and if I set both the Kick and the VAMO to the same power, I can tell a slight difference in the vape using the same topper.
IDK how to describe it, but the Kicked vape just seems more "correct" as it were. I seriously don't use my VAMO much anymore. Mainly only if I want to have 2 mods with toppers on them so I can switch very quickly.