That almost everything is so less effective then it should be. The only fire that was hot enough to burn
the one ring seems to be barely hurting
Gollum.
The ring is supposed to increase the power of the
Maia(
Sauron) and jet when he blasts the
elf's with his maze they don't even seem to die as they fly through the air(you can hear them scream as are tossed out of Sauron's way). The
Uruk-hai helmets not being able to withstand tiny stones tossed on them by the
hobbits etc. Say what you will about The
Hobbit an Unexpected Journey but at least the easily defeated
goblins were all in smaller proportions with no
armor to cover them at all.