It is likely there are some similarities, I believe more research is needed to confirm that they are indeed a match might be a fit for a Unmerged Match.
Sometimes profiles appear to be duplicates but you're not ready to merge them.
This could be because one of the profiles is private and you can't see the full information. Or it could be because there is so much conflicting information you're not sure whether the profiles represent the same person or not.
Setting the two profiles as Unmerged Matches will remind you and others that there is information to be worked out.
You'll want to use the text space and comment board on the profiles to describe any disputed information.
An Unmerged Match is a temporary state. You should work with others to resolve the open questions and either complete the merge or reject it.