this would be true for those of us who use nickel only, i though, use many other wires than nickel, and some wire mixes, in which preheat does not perform well, so i have to keep the preheat turned off. anyone using Ti or SS is most likely not using preheat, and that is a good portion of vapers on here. So therefore, changing wattage on a device with no preheat does make a huge difference