[Eomer of the Rohirrim]

I'm sorry but I feel I must spoil Galadriel-fest here.

Galadriel was 'doing stuff' with Nenya. She was using it to preserve Lothlorien and doing a fair job in keeping Sauron's servants out. But that's pretty much all. She couldn't stop the Orcs from entering her land, could she? She wasn't that powerful with Nenya.

As for Glorfindel (and Aragorn) with the Nazgul, the Nazgul are only ghosts anyway. Why should a mighty Elf-lord be afraid of them? Aragorn himself was doing a pretty good job of fighting off those undead rogues! To compare the Nazgul with the Maiar (which was suggested if not explicitly set out) is laughable.

So Galadriel might well be more powerful than the Glorfindel who chased away the Nazgul, but she's still nowhere near what Luthien was, even with an Elven Ring of Power. Luthien was the greatest of the Eldar (undoubtedly the greatest Elf) and is by far greater than Galadriel ever could have been.

Mith, doesn't Tolkien say somewhere that Elrond's mixed ancestry (Elves and Men) makes him greater than other Elves and Men?