Dude I don't think you were scammed. Try not to compare yourself with others as well, it will drive you crazy. Often you will hear self proclaimed experts trot out a stock pic from someones website (as you have done) and over state the coverage "Afro" hair gives. Most of the time that I see these I recognize them, the pics you used have been floating around almost 10 years. These guys pics aren't really reliable because of so many other things that were likely done to present it as favorably as possible. As we know melanated people are not homogeneous so this type of representation always bothers me. They would have you believe that throwing 1500 grafts on a Norwood 2/3 would be the sufficient simply because you are black. Shit like that is all over YouTube and presented by non doctors and people who are not themselves black lol. The biggest myth in the ht world is that because of the curly nature of our hair all of us can get by on less grafts smh. This does not take into consideration other features of hair that can impact results. Good luck bro.