Here in the UK there is a TV celebrity who has had a much publicized transplant done in the USA.
As the picture shows, the result looks pretty good.
However, ALL pictures that are printed are taken from the same angle and he has to comb his hair in this particular style.

He was recently on TV and the camera shot him from a different angle and his hair was clearly sparse and you could easily spot the concealer he was using.

I really worry about people making judgements on the quality of HTs from pictures alone.