“There is that religious divide that was more pronounced in those days after all. Churchill would have been Tolkein’s contemporary face of the Reformation.”
That isn’t why Tolkien would have mocked Churchill. Tolkien would have mocked him for being something of an imperialist opportunist - which Churchill most certainly was.
In December, 1943, Tolkien wrote of Stalin and Churchill at the Tehran conference this way: “that bloodthirsty old murderer Josef Stalin inviting all nations to join a happy family of folks devoted to the abolition of tyranny and intolerance! But I must also admit that in the photographs our little cherub W. S. C.” [Winston Churchill] “actually looked the biggest ruffian present. Humph.”
Churchill was a very casual Christian, at best, hardly a Reformation figure.
Churchill was no inperialistic opportunist. That is instead the character of the man’s enemies. This is no place to take the Obama line on Churchill.