Approval Rule Setups vs BPM Worklist what to use?

Summary:

There are 2 ways to implement approval rule in oracle, Approval Rule Setups and BPM Worklist.

What is the preferred method to be used when it comes to the configuration of approval workflow?

What is the advantage is using one instead of the other? (apart from the fact that approval rule setup is much more user-friendly)

I also noticed that configuring the approval workflow from Approval Rule add the changes in the corresponding workflow in BPM Worklist

For example: I have configured approval workflow in Approval Rule Change Personal Information, and the same configuration is also synch and appears in the BPM worklist PersonInformation.