[PeterisP]

But Ivan the Terrible simply wasn't a good king - taking Russia from being a grand-principality centred on Moscow to a continent spanning empire is a major change in the world that we have to note in history, but it doesn't make someone a good king, neither his contemporary nobles nor his contemporary peasants nor the conquered peoples really benefited from that.

There's a difference between good and great, having a major impact doesn't imply that the impact is good. Alexander the Great is another example of someone who had an outstanding impact, but was not a good king.