Vows asynchronous test confused my poor brain

gistfile1.js

var vows = require('vows');
var assert = require('assert');

var vowSuite = vows.describe('Vows');

vowSuite.addBatch({
  'Call callback with error and one extra parameter':{
    topic: function(){
      var callback = this.callback;
    
      setTimeout(function(){
        callback(null, [4,5,6]);
      }, 100);
    },
    
    'I DO NOT put error in my parameter list': function(array){
      console.log('Array 1', array);
      assert.equal(array.length, 3);
    },
    
    'I DO put error in my parameter list': function(error, array){
      console.log('Error 2', error);
      console.log('Array 2', array);
      assert.equal(array.length, 3);
    }
  },
  
  'Call callback with error and two extra parameters':{
    topic: function(){
      var callback = this.callback;
    
      setTimeout(function(){
        callback(null, [4,5,6], 42);
      }, 100);
    },
    
    'I DO NOT put error in my parameter list': function(array, number){
      console.log('Array 3', array);
      console.log('Number 3', number);
      assert.equal(array.length, 3);
      assert.equal(number, 42);
    },
    
    'I DO put error in my parameter list': function(error, array, number){
      console.log('Error 4', error);
      console.log('Array 4', array);
      console.log('Number 4', number);
      assert.equal(array.length, 3);
      assert.equal(number, 42);
    }
  }
});

vowSuite.export(module);