Balrog fight in the TTT

[Balrog_of_Morgoth]

I have always been fascinated by Balrogs. I think they did an excellant job of capturing the terror of them on the screen, although the size and wings/no wings of the flaming Maiar could be debated.

I loved the fight between the Balrog and Gandalf, but I was a little surprised that they went from showing them crash to the depths of Moria and then straight to the peak during Gandalf's recollection. Do you suppose some footage of the endless stair may make the extended cut? I certainly hope so.

I was also slightly disappointed at how seemingly easy the Balrog was slain. If I'm not mistaken, the fight was to have lasted several days. On the other hand, if some of the great Elf Lords of the First Age were able to hold their own and even defeat Balrogs in some instances (Glorfindel and Ecthelion), then it would seem that Gandalf would certainly have the power to kill one, especially when wielding a sword forged in Gondolin.

I'm sorry for rambling, but Balrogs do greatly interest me.
Any thoughts?