Whenever a book is adapted to the screen (t.v. and/or movie screen), the book is almost always going to remain better if for no other reason than b/c of time limitations that make it virtually impossible to fully adapt with the same level of detail as a book has. Now, I have a strong impression that the general consensus among book readers would be that most changes D&D have made for the show are bad, and that most people would have preferred they just more taithfully follow the books (