Microsoft

As you can see, Update and Patch are almost the same, with the difference the same difference between PATCH and PUT (Update replaces the record, so all fields need to be included, else they will be null). So I would say Patch supersedes Update in most cases.

Except that's not exactly true, see if you have a GUID you can use Patch without a lookup, as we don't need a full record to identify it. Check this out: Patch(dummyData,{ID:1},{Title:"Num1",number:1}) works too, so we don't need that lookup.