23andMe is a lot better and more scientific. I wouldn't advise anyone to take Ancestry.com. They are scamming people with their results.
Heres a picture of what East Africa covers, same as AncestryDNA region of SouthEast Bantu
http://tinypic.com/r/2czd3tj/9
Here is all the regions 23andme has
http://tinypic.com/r/10fpzqp/9
The difference is just saying East Africa specifically.