[ Spoilers? Perhaps. WGS+ ]
That's as simply as the title says. How powerful is the player character lore-wise? By that I mean, under some circumstances our character can take damage from pretty ridiculous things, but if we focus on lore only, how powerful is the World Guardian?
I've not done any quest beyond Plague's End so far, but know plenty about quests ahead of me (thanks people who give spoilers with no warning). During ROTM, we see as Arrav simultaneously fights all the six Barrows Brothers. I think it's made pretty clear for everyone that we could beat Arrav to a pulp if our goal wasn't freeing him. While one could argue Arrav was not at full power at the time since his body was very old, neither were the barrows, and their bodies are probably much older than Arrav's. However, during Rise of the Six (minigame), which we can solo, all the brothers are much more powerful and we engage the six of them simultaneously.
We've faced and survived through impossible situations. Lore-wise, we defeated General Khazard, Kree'arra, K'ril Tsutsaroth, General Graardor, Enakhra, Zemouregal, Nomad, Char, Vanstrom Klause, Lord Drakan, two Tormented Demons, the Dark Lord, a god-like dragonkin (while some could say he was weakened, it really didn't look like that to me) and Sliske (forgive me if I forgot something, but most of the above quests I finished many years ago, while others I have still to complete. Even at the beginning of our adventurer life we've defeated quite powerful creatures, such as Delrith (lore-wise supposedly powerful enough to destroy a city) and Elvarg. If we are to say the Completionist cape and its trimmed version do exist and are actually obtained by the World Guardian, we could also say our character is powerful enough to defeat creatures such as Nex, the QBD, Telos and Voraggo.
So, how powerful exactly we are in the lore? How powerful is the World Guardian compared to other powerful beings?