Theres a youtube vid of a german guy testing it with a oscilloscope. The Variant clone runs anywhere from 2-4x the specified wattage up to 100w depending on how low the build is. For example, a .2ohm coil at 10w is actually firing at 36w, 30w at 70w, etc. I dont remember the exact numbers but if you look for it on the tube youll find it. Its in german but all you need are the numbers.
Its the Variant clones only real downfall, its built beautifully, looks great, and otherwise performs great other than the huge overvoltage...and its a BIG downfall.