" this case McDonalds is volunteering to be more transparent about its non US tax affairs and pay MORE tax than if it had stayed in Luxembourg. "
Vs
"believe that McDonalds are voluntarily paying more tax out of the goodness of their hearts"
Nope.
Still can't see how it is The Same Thing.
McDonald's is in fact volunteering to be more transparent about its non US tax affairs.
It is also going to be paying more tax.
These are both true statements.
By contrast, "voluntarily paying more tax out of the goodness of their hearts" is not a true statement, and not remotely what howabout posted.