I guess I can see that. What I meant was that it gets put into your app list and can be launched, be put on your homescreen, appear in the recently-used app list, etc., like any other app. I wasn't making a statement about the performance or "nativeness" of any particular app.
You can also add any Chrome bookmark to your home screen, just like any other app.
It won't be integrated into Android very well though; you can't kill the process, you can't check its resources, it's not in the task switcher, etc, etc