As far as the results are concerned, there are no advantages of power assisted liposuction over traditional liposuction. The only advantage of power liposuction is for the surgeon. Because of it's vibrational movement, the surgeon is able to move the cannula through the areas of fat with more ease. There is less surgeon fatigue as he performs the liposuction.
So, from a patient's point of view, there is no real difference as far as results are concerned.