The Balrog vs The Witch King

[Raynor]

Originally Posted by Boro

Why does the breaking of the Gate prove an increase in the Witch-King's power?

We were debating the meaning of "added demonic force". Neither we, the more knowledgeable fans, nor the first time reader, have witnessed the WK display such force, although he had ample reasons. In this specific context of debate, the alternative interpretation is rather unlikely, for reasons given in this thread.