Is the double chin fat reduction effect guaranteed if I get 70,000 lines of Onda Lifting?

I am considering getting the Onda Microwave Ultrasound Lifting, which is said to be very popular these days, focusing on my double chin and outer jawline. I am drawn to it because it is said to be almost painless and provides immediate lifting effects thanks to the cooling system, but I noticed that payment is usually made by Joule (J). Since the energy delivered per 3 seconds varies, I am wondering if I would need around 50,000 or 70,000 Joules to see a slimmer facial contour.

For those who have received Onda Lifting, I'm curious to know how many shots/lines you received, and whether you were more satisfied than with Shurink or InMode!