Obviously photos can be misleading but based on these I would have to say the results are disappointing. He seemed to have a lot of native hair left on the back half of his head. 3700 grafts located in just the front half should have provided a very solid result based on most other results I've seen posted with similar loss and that number of grafts or maybe even less grafts.
It looks like the grafts were placed all the way to the crown even though he had mininmal (thinning) loss in the back third. To me, the 16 month results look like he either had additional native loss due to MBP or permanent shock loss of of some of his native hair due to the transplant.
Some docs seem to believe in trying to "finish" an area in one
HT and then moving on to other areas with subsequent HTs while others try to provide as much coverage as possible or even future-proofi the work by grafting into areas that aren't terribly affected with MBP yet. Based on graft placement, it looks like the latter approach may have been taken here.
We don't know his donor situation, but based on his really solid crown and even back third of his scalp (based on the before top shot) I would have asked for all those grafts to be placed in the front half and no farther back and then try and rely on meds to keep the back strong. The overall result may have been better - less chance of shock loss in the mid-back scalp and more density for the hairline and front half.
I have more hair than this guy and was thinking about 2000-2500 in the front third, but going on these results, I would either not do a
HT at all or have to up that to at least 3000 to get the results I want (and that's with the goal of keeping a mature hairline).