I agree with your explanation. My test was the expensive one and it gave me simple direct information. My maternal ancestors came from Africa, and it stated where in Africa in this time era and where people with the same type of DNA are NOW living. People migrated all over Africa.
To spend all these $$$ testing with different companies for more in debt information is beyond me. Money is what it's about. They can modify and tell you a lot with scientific data and it's actually migrations from many, many years ago. So what I am saying is if you have the money buy every DNA test out there. When will you be satisfied.?