All liposuction medthods are divided into 3 stages:
stage 1 - infiltration of tumescent solution to dramatically reduce blood losses, decrease the pain and increase the accuracy of liposuction
Stage 2 - energy application (Ultrasound with VASER / high direct heat with laser)
Stage 3 - evacuation by passing tubes (cannulas) back and forth through the fat on high suction
Standard liposuction consists of stages 1 and 2 and is the way MOST liposuction is still done. VASER uses ultrasound to literally shake fat loose from behind fibrous areas such as backs and male breasts. It is associated with little damage to blood vessels and nerves. But the fat needs to be removed by suction (stage 3). Laser liposuction uses a very hot fiber to literally cook everything it touches. The resulting fatty emulsion left by the hot fiber needs to be then removed by suction just like every other suction.
Frankly, the literature does NOT support the superiority of laser liposuction to ANY of the liposuction method and there are plenty of laser liposuction disasters out there. Only 3% of Plastic surgeons use laser liposuction. VASER liposuction is much safer and is used by a much larger number of surgeons but it takes additional time to perform. As result, the vast majority of Plastic surgeons do not use either method.