For this type of question, you might want to google it on all the hair transplant websites (ie hairtransplant.net, hairsite, baldtruth, etc...) and there you will find a lot of comparisons like this. Use the "search" fucntion, but you will have to register on those sites so you won't have to put a password in every time you search for something. You have to find the forums specifically dedicated to "hair transplants" on all those sites.
But - beware! Many of those sites are slanted and aimed at generating sales. Those sites are funded mainly by many of the surgeons and hair transplant clinics themselves and are used as a marketing tool.
Also, many of the so-called "recommended hair transplant surgeons" on those sites are hardcore butchers. They rely on those sites to bring them business (ie "suckers"). DO NOT go by their "recommended IHAIRS surgeon list" as many of those surgeons are hacks, quacks, and nothing but butchers - that should have been out of business a long time ago.
Beware - there are a lot of sales people on those sites (shills, reps for hair transplant clinics) that get paid to bring in new hair transplant clients (customers) for all the different hair transplant clinics. Some are trustworthy and the clinics they represnt are decent and legit; while other are NOT! Just be aware of that. You have to look in their profiles to see if they work for an hair transplant clinic or not.
But, nevertheless, you can get some decent info on many of those sites, you just have to become savvy at sifting through the mountains of info and deciding what is BS and what isn't.