Confusion About Ember Resource vs Routes

I have been reading Ember CLI 101 to understand the resource / route distinction but am having trouble understanding the situation below:

I created a new project with ember-cli and ran:

ember g resource testme --pod

and

ember g route testme/testresource --pod.

Then, I added changed testme/template.hbs to look like:

This is test me1.
{{outlet}}

and changed testme/testresource/template.hbs to look like

This is the test resource .

{{outlet}}

The routes look something like

  this.resource('testme', function() {
    this.resource('testresource', function() {});
  });

Why is it the case that navigating to

http://localhost:4200/testme/testresource

presents just

This is test me1. 

and not

This is test me1. This is the test resource .

If I change testresource to a route, I get the both sentences. Why don't I get both if testresource is a resource? What's the point of having the 2nd template if it doesn't get rendered?