Proving to Myself that in ExtJS 5 ViewModel data does move Functionally

I’ve been having issues that makes me think that ViewModel data in ExtJS 5 does not move through the prototypical inheritance chain so I put a small example to show my case.  Of course, my example works exactly as exptected.  I’m showing it here just for reference.  The output is simply what is below.

The problem I've been having is with bindTo to get a model row.  From what I can tell, data moves exactly as expected but I'm not sure that store and formula model view stuff follow the same path.  I can drill down and see it in the prototype but it is not obvious like it is with data.  More research coming.

Object {from2: "from2", from1: "from1"}

 Ext.application({
            name: 'MyApp',
            launch: function () {
            <span class="kwrd">var</span> panel = Ext.create(<span class="str">'Ext.Panel'</span>, {
                renderTo: Ext.getBody(),
                height: 500,
                width: 500,
                viewModel: {
                    data: {
                        from1: <span class="str">'from1'</span>
                    }
                },
                layout: <span class="str">'fit'</span>,
                items: [
                    {
                        xtype: <span class="str">'panel'</span>,
                        layout: <span class="str">'fit'</span>,
                        viewModel: {
                            data: {
                                from2: <span class="str">'from2'</span>
                            }
                        },
                        items: [
                            {
                                xtype: <span class="str">'button'</span>,
                                text: <span class="str">'1st level'</span>,
                                handler: <span class="kwrd">function</span> (button) {
                                    <span class="kwrd">var</span> viewModel = button.up().getViewModel();
                                    console.log(viewModel.getData());
                                    debugger;
                                }
                            }
                        ]
                    }
                ]
            });
        }
    })</pre>