Elisabeth,
I think you have cited another thing Nicholas II and Louis XVI had in common, They both (catastrophically) submitted their wives' political judgment at a critical moments. I sometimes have wondered if Nicholas really knew what to think or how to act without input from Alexandra. He was, in some ways, a weak man.
Yes, I agree with you, Lexi, I think Nicholas was a weak man, with all the inborn obstinacy of a weak man. At the same time, I am reluctant to follow the example of so many others here and agree that, by way of compensation, he was also an entirely
good man at heart. I can't get out of my mind those enthusiastic remarks of approval he scrawled across official documents announcing recent pogroms against the Jews of his empire.
So no, I don't believe Nicholas was saintly in any sense of the word, at least, not while he was still tsar of all the Russias. There was not only the occasional bloodthirstiness where Russia's "internal enemies" (the Jews, the revolutionaries) were concerned, but there was also World War I. Which is not to say I believe he was bloodthirsty in the latter case - initially at least he seems to have felt supreme reluctance to sacrifice his subjects' lives, even in the name of a "good cause," the war against Germany and Austro-Hungary. Nevertheless, after the usual initial hesitancy (common to many rulers), he became resigned to the so-called political reality and let millions go to their deaths as if there had never been any other alternative (and yet, no doubt there were other alternatives).
On the other hand, everything I've read about Louis XVI would seem to indicate that he was a genuinely good, even saintly soul who could not bear the thought of anyone's blood being spilt in his name, even if it meant that he would be imprisoned by radical forces, even if it meant that he would lose his throne or, for that matter, ultimately his head. He was terrified of the prospect of civil war, of Frenchman killing Frenchman. But again, I'd counsel everyone to consult Silja on any matter regarding Louis XVI - she really is in command of an impressive amount of knowledge about the French Revolution and particularly about Louis and his wife Marie Antoinette.