Originally posted by ScreamPaste
Seems that way, but it also depends on what period we're discussing it from. If it's all beings in Middle Earth the later in the series we discuss the harder it becomes. At the end of LoTR Sauron is crippled, Smaug is gone, I'm not sure any Balrogs remains, the Wizards are reduced save perhaps Gandalf, the undead army is dispersed, and most armies have been completely decimated from war.I'm not going to comment on who would win in any definitive way, though, because this is restricted to the movies and I can't recall much from the Narnia movies and have not seen Game of Thrones.
I was under the impression that we used the most recent setting shown in the movies. For instance, lotr gets the Nazgul, Sauron, Gandalf, the Orcs (shown at Minas Tirith), Rohan (at Minas Tirith), Gondor, Elves (helms Deep), dwarves (I suspect we will see a army in the third Hobbit movie), but not Smaug (not part of a army) same goes for the Balrog, they get the ents though and the Uruk Hai and Saruman. Westeros doesn't get the dragons because Daenerys isn't a part of them, hence they don't get any of the Dothraki as well. I'm also highly skeptical about Narnia getting Aslan as he isn't a part of a army. But that is just my take.
We can ofcause just take the armies shown in the movies and combine them all. To that I just say watch the first part of the Lotr movie and weep for Westeros.