Last night I was playing around with the Ancestry DNA that kits I manage.
I looked at my Double First Cousin's DNA ethnicity report from Ancestry.com and thought it looked different from mine. I had expected that, as we share grandparents and direct ancestors on earlier generations, our reports would be similar. I got a surprise after I checked my report and compared the results side by side. (Sorry about the blurry images but I wanted to have them beside each other on the post so had to limit their size.).
My ethnicity breakdown is a pretty good match with what I have discovered through traditional research but my cousin's doesn't ring true.