Hm. Thread's been pretty dead. Well, I can probably be more active in here now, anyway, so:
I don't have to prove the negative statement ("Barbas wasn't amped") here, though, especially since people who wield the Sunna'rah being amped by it is not the default, so the burden of proof falls on you here. A vague possibility of something being the case is no real reason to eschew scaling entirely. Not to mention that I do acknowledge that Barbas used the power of the Staff, as you can gather, just not at the very start of the fight, during which he was fighting without it.
First paragraph is a
very watered down way of putting it, given that Alduin is very directly referred to as the "Time-Eater," and Paarthurnax refers to the end of the current Kalpa as being the end of time, which in turn is corroborated by MK's talk about the Dawn Era being what follows his world-eating. Saying he just "messes with time" is pretty blatantly downplaying what he does.
Not to mention that Fyr referring to anything else here is very, very unlikely, given that Mundus having "current" or "past" incarnations is not something that remotely alludes to anything else in the setting.
My argument remained very constant throughout this discussion, I believe, save for me bringing up the statement regarding the Moons' connection to time and mortality (Which I already dropped as you can see above), as you can see by the fact I talked about the whole deal with Alduin returning things to the Dawn Era in the OP, too. And, for the matter, you haven't really proven anything to that effect, no, beyond saying that what Alduin does is just turning back time,
which I already explained is not the case, and which is not even something we acknowledge in the current profiles.
And I don't see how Alduin eating the concept of time across the Mundus is contradicted, either.