Failing Registry Detection Method in SCCM 2012 R2

When creating a detection method in SCCM that leverages a Registry entry, SCCM 2012 confusingly offers the option to "Use (Default) registry key value for detection."

Seemingly, this would allow you to target the presence of a Registry Key, by specifying the (Default) value. However, this does not actually work.  You'll need to leave the box unchecked to target a key.  

Even though the registry GUI shows that a (default) value exists for every key, that's not actually the case. 

 In PowerShell, we can see that HKLM\Software\Microsoft does not have any values, while HKLM\Software\7-zip does.  The (Default) key regedit shows is not an actual entry.

I am not sure the reasoning behind adding the Use (Default) registry key value for detection check box, but leaving it unchecked performed the behavior I originally expected.