Promise vs Return

var myFunc = function () {
  myOtherFunc(); 
  console.log('hi');
};

var myFunc2 = function(){
  var deferred = jQuery.Deferred();
  var x = myOtherFunc2(deferred);
  x.then(function(data){
    console.log(data);
  });
};

var myOtherFunc = function(){
  setTimeout(function(){console.log('123');}, 5000);
};

var myOtherFunc2 = function(deferred){
  var data = "12345";
  return deferred.resolve(data);
};

myFunc();
myFunc2();