Yes, it is easier to have a six-pack after abdominoplasty with muscle repair because some of the fat has been removed over the muscles, so that any definition you have will be more visible. Also, the muscles are realigned in the midline so the six-pack will not be pulled to the side. Whether you can have a six-pack depends also on your body weight (or more precisely your BMI), abdominal muscle tone, and genetics. Some people can never really develop a six-pack because they don't have well-defined tendinous intersections to their rectus muscles. "Sculpting" with liposuction does not create a six-pack, as is sometimes claimed. Getting a six-pack is hard work, but a tummy tuck, if you are a candidate, will make it easier if you are genetically favored.