Ethnic ancestry results has been an ongoing discussion I've been having with some of my students since my DNA workshop I conducted late last year. I have mentioned several times in our discussions that none of the biogeographical ancestry (BGA) results from any of the major DNA testing companies are entirely accurate. For the first time the BGA results from several major DNA testing companies are now available for one person CeCe Moore. She has posted up an interesting review of her various ethnic ancestry reports on the Your Genetic Genealogist blog.
CeCe Moore shares her ethnic ancestry reports from Family Finder, 23andMe, AncestryDNA, and Geno 2.0. If you haven't used any of these tools, this is a good way to see what the reports look like and how they might differ. Your results, of course, would be unique to you. You can see CeCe's results by clicking here.