Out of curiosity, where do we place the Dragonborn and Chosen Undead?
Dragonborn ends up more powerful than Miraak who was able to fuck with the liminal barriers and had the power of the final Black Book (which could alter the constellations, and going off TES lore this is likely way more impressive than IRL stars).
Miraak in turn is more powerful than Alduin (at least Alduin as he was at that time). Even at the time though Alduin's return was comparable in scope to a planesmeld, dragonbreak or Oblivion Crisis, was going to end the world as confirmed by word of god, which would involve ending the timeline itself. Miraak being > Alduin is based off the official description of Dragonborn describing Miraak as your deadliest adversary, as well as Miraak defeating a Dragonborn who had defeated Alduin (twice, the first time Alduin was forced to flee) with mere sparks.
The Bow of Auriel can shoot arrows into the Sun, and Dovahkiin is superior to (baseform) Vestige who can call down a chunk of the Sun (again, this is likely far more impressive than IRL counterparts).
The Staff of Magnus is able to nullify the Eye of Magnus, which is so powerful that the Psijics themselves had to step in to seal it so as to stop it from destroying the world (given the Psijics are involved, 'world' in this context may mean 'Mundus,' as IIRC a Psijic in the official novels refers to Mundus as being the world; Mundus is the material plane as a whole). The Wooden Mask can be used to go back in time (at least as a spirit).
Dovahkiin also has a shitton of hax, with shouts such as Slow Time, Soul Tear, Become Etherial and many more, and many spells too (paralyze, calm, invisibility, telekenisis, transmute, breathing underwater, soul trap and more). Dovahkiin was also noted to be "surprising sane" after meeting Hermaeus Mora.
That's one big TL;DR though so universal+ with infinite speed and a ton of hax and hax artifacts.