Yes it uses less amps for the same rpm with the same prop and motor, but how it does it I don't know, I am just a mechanical engineer constructing oil recovery equipment
. I have noticed it by comparing my Jeti on my AXI 5330/FAI turning AXI 20x13, I used about 5-7% less mAh, compaired over several flights in differnt wind conditions going from 1 m/s up to 10 m/s.
Must say I'm very pleased over the performance of this controller. But off course it is up to people themselfes to decide which controller to use, just telling what I feel is the "best buy" at this moment.