My spacing is NOT back to that of 2013...
Preliminary details:
Windows updated yesterday (01/14/16) at 6:02pm.
Office updates are set to automatic.
But this is the current state of affairs (to scale):

The size of the icon picture is the same (which is an improvement as it was bigger - thank you for reducing it) but the
spacing still is FUBAR. The space used by the icon on the QAT
is twice as wide and 1-1/2 times as tall as that on the ribbon. When you start racking up the icons on the
QAT, this happens:

The icons take up more space than they did in 2013, necessitating the use of the dreaded More controls, which defeats the purpose of a
QUICKAccess Toolbar.
I'm not expecting the space used by icons on the toolbar to be the same as that on the ribbon (although that would be VERY much appreciated and once was the case) but I AM expecting it to mimic
2013.
I now have 26 icons on the QAT and 12 on
More controls. With 2013, I had ALL the icons on the QAT with some room left over at the end, which was handy for experimenting with new commands. I even had enough room to group icons into logical
sub-groups by inserting spacers.
I can't speak to 2010 as I never used it, since I stayed with
Windows XP and Office 97 until I was forced into
Windows 8 when XP was no longer supported. I LIKED Office 97 - I could customize, and selectively call up, whatever toolbars I needed for the task at hand. (I even liked the little Paper Clip office assistant and his friends.)
But back to the present - from my Account
page:

After I choose Update Now I get this:
So, I am at a loss IRT what to do now - any suggestions? I would like my QUICK Access Toolbar back, please...
PS And yes, both 2013 and 2016 ran/run on the same laptop.