Advantages of different ways to open windows

Question

So I was reading this question here: How to load another js file on a button click in titanium

And there are two different ways to open windows in titanium. I was wondering if there are any major performance differences or advantages of each way of opening the window? I have been looking at the documentation here:
http://docs.appcelerator.com/titanium/3.0/#!/api/Titanium.UI.Window

Also I am not using Alloy.

Anyone know if there are any advantages of using each of the methods? Code snippets below.

Method 1

var win = Ti.UI.createWindow({
    backgroundColor : 'white',
    url             : 'home.js' //Path to your js file
});
win.open();

home.js

var myWin = Ti.UI.currentWindow;
//You can add your controls here and do your stuff.
// Note that never try to open myWin in this page since you've already opened this window

Method 2

//In your current page
loginbutton.addEventListener('click', function(e) {
    var Home = require('/ui/common/Home');
    var homePage = new Home();
    homePage.open();
});

Home.js

function Home() {
    var self = Ti.UI.createWindow({
        layout : 'vertical',
        backgroundColor:'white'
    });
    //Do your stuff here
    //Add other controls here

    return self;
}
module.exports = Home;

Answer 1

Method 1 is defunct. Don't use it. Only use Method2 which is the CommonJS way.

Please see the CommonJS best practises documentation:

CommonJS Modules in Titanium