Many times in a debate people will say one character is stronger because they broke the fourth wall, and met/talked to/represented/beat up the authors.
However if you ask me this means nothing, as they're not really beating up the authors, just a fictional representation of the authors, and that representation is itself created and written by the real authors.
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It doesn't really mean shit in a fight unless they have some kind of knowledge that only a reader of the comic would. Like for example, that Daredevil's radar sense can easily be beaten by sonics. Something that's common knowledge to us, but not as well known in the comic itself. Although......if DP knows he's a comic book character, shouldn't he know shit like that? It boggles the mind. He does beat Cosmic beings in one thing, he's funnier and a better character than most of them.
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In the recap page of Cable and Deadpool's series he makes continual references to breaking the 4th wall related comic stuff but not in the main content of the issue so much
But is 4th-wall breaking an actual power, or just a quirky narrative device?
I'm personally inclined to go with quirky narrative device. Sure, there are characters for whom 4th-wall breaking is a regular and consistent happening, but there are other instances in which a character will have an isolated episode of it (off the top of my head, that happens to Manikin in Alpha Flight #66, vol. 1, though it may have been a manipulation by the Dreamqueen).
On the other hand, for characters like She-Hulk and Deadpool who have routinely broken the 4th-wall over a long period of time, it seems perfectly reasonable to assume that this ability is part of their powerset and should be allowed in debates.