Relative Powers

[drigel]

the same as passing down stories from generations to generations....

I wasnt implying "generations" (these were elves after all), I was implying possibly 3-4 levels. This is all off topic (sorry LMP). An example could be:
prose (original) / history (TC)
narrative (TC)
translation (from elvish to "westron" - Bilbo/Frodo)
and again translated from "westron" to early english (Aelfwine).
Or, any other combination. Granted, the effect may work only for me, and I tip my hat to the author. My point wasnt particularly TC, but the "commissioned artist's Conciet" of the subject.

and again...Tolkien, as a philologist, choose his words carefully...since he was ulitmately the one writing the "final" stories as we would see them (or as he was working on them to become final) he wasn't restrained to believe whatever a past "story teller" communicated to him..

I would say that history, as written by different authors of different races and cultures, spanning ages lost long ago, was exactly the point of the works. And if you really subscribe to the above idea, then only TH and LotR are the only sources you can refer to in building a list, as those were the published works that were considered "final" by the author.