itsy bitsy doubts

[Maerbenn]

She took it from one of Gollum’s lines in ‘The Passage of the Marshes’:

‘All dead, all rotten. Elves and Men and Orcs. The Dead Marshes. There was a great battle long ago, yes, so they told him when Sméagol was young, when I was young before the Precious came. It was a great battle. Tall Men with long swords, and terrible Elves, and Orcses shrieking. They fought on the plain for days and months at the Black Gates. But the Marshes have grown since then, swallowed up the graves; always creeping, creeping.’

[Gil-Galad]

Remember what Gandalf said, "Not even the fires of Ancalgon the Black could melt the One Rinr" so that could mean that Ancalgon was mightier, because Gandalf would have said Glaurang if he was mightier

[daeron]

Can any of you find a battle on clear plains for months comfortable? The first attack might not have lasted months. "Days and months" in Gollum's song might be a reference to the seige. Of course Morannon might have taken time to throw down. Any idea how long?

[Eomer of the Rohirrim]

It looks like Karen has misinterpreted. Gollum speaks of days and months at the Black Gates. That sounds to me like he was referring to the Siege and the War as a whole.

It's probable that the Battle at Dagorlad was fairly swift. The description of Gil-Galad, Aeglos, and the might of the Numenoreans implies that the good guys routed the baddies.

And Gandalf's words about Ancalagon mean nothing because, as has been suggested, the Hobbits might have heard of Ancalagon and not Glaurung. Maybe Gandalf himself had told a young Frodo about Ancalagon.

Ancalagon was mightier, for the reasons stated previously.