So as promised, I read Powers of Darkness, by Valdimar Ásmundsson, and translated by Hans De Roos (which he accomplished with the help of many, many others, based on the credited people in the end of the book) and basically catalogued all the differences I could catch between what was formerly known as Makt Myrkranna, and the Stoker version.
( Beneath the cut, you will find the long list of differences, and little things I noticed. )