Capability of doing Ultra Refined Follicular Unit Grafting, Super mega sessions, Dense packing with negligible complications and naturally looking results can be considered as high quality hair transplants.
The only Authority in the World to test the competency of Hair Restoration Surgeon is American Board of Hair Restoration Surgery (ABHRS) by conducting Examinations and the passed out candidates are called as Diplomates of ABHRS.
If you can express yours concerns during consultation time you can get more clarification, because hair transplant surgeries are time tested and have lot of scientific basis.
There is lot of literature about Hair Transplantation in the Internet. Some good websites like hairtansplantnetwork.com provides sufficiently good scientific information.
The outcome of hair transplantation is always dependant on the quality of the donor hair which is characteristic of a person and also the no: of grafts implanted.
The more the no. of grafts the better the outcome. Also hair characters like:
1. Shaft thickness.
2. Color of hair.
3. Wavy nature etc… also plays a major role in giving a better outcome.