Can you please share an example of your homework? If you have done the hunt and the actual cost differences were minimal even after the last of your trophies arrived back in the USA, I think many of us here would very much appreciate getting that information. The total cost comparison I am referring to is the most commonly sought after African experience for the average hunter(s) which is a 7-10 day plainsgame hunt in RSA for 1 hunter with 4-7 trophy animals on his wishlist compared to that same hunt pretty much anywhere outside of the RSA with the possible exception of Namibia.
I am honestly not trying to be argumentative with you, but, not only have I done the homework, I have done the trips a few times over. (My apologies but no photos will be provided for proof)....

The cost of the daily rates alone in Mozambique or Tanzania for example, exceeded the total package cost inclusive of airfare compared to the first couple of RSA hunts that I have done. Then, add in a spouse, a non-hunting guest, or a couple for kids and your cost differences expand exponentially. Unfortunately, to that point, a family safari in "wild Africa" then becomes out of reach for the average working class American family.
With that being said, in no way am I implying the experiences between all the various African options are the same.. I have enjoyed immensely every single safari I have ever been on regardless of the destination in Africa. Each experience was unique with its own pros & cons. However, if we are comparing the true costs, start to finish, apples to apples between these destinations, the total cost not just less, but significantly less in RSA in my experiences.