Both databases have a bunch advantages over each other. There is no obvious winner. PostgreSQL has better performance for some loads (as far as I know there is

Both databases have a bunch advantages over each other. There is no obvious winner. PostgreSQL has better performance for some loads (as far as I know there is no clear winner in performance), better GIS support, writable CTEs, excellent built-in JSON and array support, an amazing CLI, and personally I think PostgreSQL has nicer built-in types and functions.