I confuse why I get different result when try to unit test a case using await async and .then in javascript

so here it is my await code

 it.only('should successfully return property data based on userRef', async() => {
 const result = await server.executeOperation({
    query: GET_LISTINGS,
    variables: {
      filter: {
        userRef,
      },
    },
  });
  console.log('await-->', result);
 }

the output of await :

await--> {
  http: { headers: Headers { [Symbol(map)]: [Object: null prototype] {} } },
  errors: undefined,
  data: [Object: null prototype] {
    getListings: [Object: null prototype] { edges: [Array] }
  },
  extensions: undefined
}

and here it is my .then code

it.only('should successfully return property data based on userRef', () => {
server
    .executeOperation({
      query: GET_LISTINGS,
      variables: {
        filter: {
          userRef,
        },
      },
    })
    .then((result) => {
      console.log('-->then', result);
    });
  }

the output of .then

-->then {
      http: { headers: Headers { [Symbol(map)]: [Object: null prototype] {} } },
      errors: undefined,
      data: [Object: null prototype] {
        getListings: [Object: null prototype] { edges: [] }
      },
      extensions: undefined
    }

the different is when I use await I get the data but when I use .then I got 0 data , what i mean by 0 data is in egdes properties it contain [] which mean 0 data