What is the difference between liposuction and air sculpt?

It is so funny that you ask this question because I also had this same questions a few weeks ago. I looked into it to become educated myself. "Air sculpt" is a term that one specific surgeon (he is a general surgeon and not a plastic surgeon) came up with. It is essentially very similar to smarltipo or other forms of laser liposuction. Where a small opening is made and a laser is inserted to melt the fat and then is removed through that same tiny opening. They do market that they do not "cut" the skin (so no scalpels are used), but they have created their own device to "cut" the skin. My opinion is that they are offering something that most plastic surgeons offer but just marketing it in a slightly different way. Do your homework...find a board certified PS that has a lot of experience. Ask to see before and after photos. 

I would not focus on different liposuction methods or techniques but rather on your selection of surgeon.

I find it a mixture of amusing and confusing that a physician would promote and market a specific liposuction technology as providing a superior result compared to standard tumescent liposuction, when no research exists to prove superiority of any of the technology.  Further, it is impossible to make any predictions about the "skin tightening" ability of any device, as this varies dramatically from patient to patient. Your genetics, age, skin type, history of what your skin has been through, and body mass index all affect liposuction results more than any technology used to remove fat.Do yourself  a favor and shop for your doctor, not the technology.  See an experienced board-certified plastic surgeon and look at their photos, read their reviews, and see how you get along with them and their staff before deciding on surgery.