Two German tools, two jobs
This is not a comparison where one wins. Userlike is for the visitor who is on your site right now; rapidFOX is for the request that outlives the visit. On the data question both give the same answer, which makes the choice about the job rather than the jurisdiction.
What rapidFOX adds is the case: an owner, a deadline, a history and a knowledge base – plus an AI that runs on the same server as the data.