Hey Bill
What you mean by "natural hair" may not be the hair I was talking about, which is the weak-gened hair. If this person was not on meds to maintain those weak-gened hair then its not easy to tell the improvement, because you would have those weak-gened hair falling while transplanted hair growing and end up roughly about same density. But it depends on areas, frontal seems to show much better results then crown given the same amount of hair, quality of hair..etc. This person had more hairs put in the front and less in the crown. If he was not on meds during the 3 yrs then some hairs would've fallen from crown while transplanted hair would've grown out in crown and ended up not much difference. If he was on meds during the 3 yrs then he may have preserved some weak-gened hairs to fall while gotten transplanted hairs to grow.