Keydown Simulation in Chrome fires normally but not the correct key

document.addEventListener('keydown', e => console.log(
'altKey                : ' + e.altKey + '\n' +
'charCode (Deprecated) : ' + e.charCode + '\n' +
'code                  : ' + e.code + '\n' +
'ctrlKey               : ' + e.ctrlKey + '\n' +
'isComposing           : ' + e.isComposing + '\n' +
'key                   : ' + e.key + '\n' +
'keyCode (Deprecated)  : ' + e.keyCode + '\n' +
'location              : ' + e.location + '\n' +
'metaKey               : ' + e.metaKey + '\n' +
'repeat                : ' + e.repeat + '\n' +
'shiftKey              : ' + e.shiftKey + '\n' +
'which (Deprecated)    : ' + e.which + '\n' +
'isTrusted             : ' + e.isTrusted + '\n' +
'type                  : ' + e.type
));

Podium = {};
Podium.keydown = function(k) {
  var oEvent = document.createEvent('KeyboardEvent');

  // Chromium Hack
  Object.defineProperty(
    oEvent,
    'keyCode',
    {
       get : function() {
         return this.keyCodeVal;
       }
    }
  );
  Object.defineProperty(
    oEvent,
    'which',
    {
       get : function() {
         return this.keyCodeVal;
       }
    }
  );

  if (oEvent.initKeyboardEvent) {
    oEvent.initKeyboardEvent("keydown", true, true, document.defaultView,
                             false, false, false, false, k, k);
  }
  else {
      oEvent.initKeyEvent("keydown", true, true, document.defaultView,
                          false, false, false, false, k, 0);
  }

  oEvent.keyCodeVal = k;

  if (oEvent.keyCode !== k) {
    alert("keyCode mismatch " + oEvent.keyCode + "(" + oEvent.which + ")");
  }

  document.dispatchEvent(oEvent);
}

//Sample usage
Podium.keydown(65);