Thrice shall pay for... what?

[Pitchwife]

Originally Posted by Raynor

Well the eagles are names as vassals of Gwaihir and Landroval, however only Gwaihir bears the name "the Windlord"; considering the nature of this race, this title should establish his prominence among all the other eagles - I am not quite sure we can imagine another title surpassing it in significance.

Now you mention it, it strikes me that "Windlord" is almost a paraphrase of Manwe's own title - Lord of the Breath of Arda. That certainly does suggest he was an Eagle of exceptionally lofty rank. Landroval's name, in comparison, merely means something like "Broad Wing", if I remember my Sindarin right - indicative of stature but not status. Good point.
But if we assume Gwaihir was the King of Eagles from TH, something seems wrong with Gandalf's mathematics, as Ibrin pointed out at the start. Don't pretend Wizards can't count!