GENI has an order of magnitude (10x) more profiles than Wikitree does. I don't know the statistics about the number of duplicates on each site. My personal impression is that Wikitree has more duplicates as a percent of the total number of profiles than GENI does. I'm equally active on both sites and I have way more duplicates to deal with her on Wikitree. On GENI I track all my ancestors and GENI gives me a list of possible duplicates and if any appear they are merged immediately either by me or by a curator. However, I would imagine that the duplicate issue probably varies. My ancestors are all from old New England and they are pretty tightly monitored on GENI. I can’t speak for what happens with trees with ancestors from other countries or other regions. On GENI the GEDCOM import thing works poorly. However, they have a Chrome plugin so you can batch copy over profiles from other sites like Ancestry.com with a click on a button. So people can zoom around adding dozens of profiles in a second. That makes it very easy to grow the tree. It’s a killer app! I think that’s a large part of why their tree is growing so fast.
Automatic propagation of DNA results: Y, mtDNA and Autosomal is the key to the future of genetic genealogy. I think GENI really suffers from the lack of that feature. It is a huge benefit to Wikitree users. I think this is huge. On GENI we have to add them by hand using Haplogroup Projects. That is slow but there are more volunteers to do it. So you can see from the S.A. mtDNA project URL above we have a lot of progress already. But it would be so much easier if we had an auto-propagate feature like WIkitree on GENI. On GENI a lot of important DNA information is just unknown to us :(
