Gandalf Vs. The Witch King

[obloquy]

Originally Posted by Raynor

Fram killed Scatha the dragon, Glorfindel - a balrog, Echtelion- Gothmog lord of the balrogs, Bard - Smaug, Turin - Glaurung.

Whether dragons possess any elevated form of fea (such as the ealar who are known as Balrogs) is debatable. Glorfindel and Ecthelion were virtually demigods. Glorfindel is said to be nearly as mighty even as some Maiar; Ecthelion must also have been.

The Peoples of Middle Earth, XIII, Last Writings, Glorfindel essay 2:

After his purging of any guilt that he had incurred in the rebellion, he was released from Mandos, and Manwe restored him.... For long years he remained in Valinor...in the companionship of the Maiar. To these he had become almost an equal, for though he was an incarnate...his spiritual power had been greatly enhanced by his self-sacrifice.

Admittedly, this reflects the power of Glorfindel post-reincarnation, but he was evidently near to the power of an incarnated Maia, as those Balrogs who were slain must have been, even before his sacrifice. (Note: after his reincarnation he was nearly equal with Maiar in their natural incorporeal state.)