This is when someone states that because something has demonstrated any limits (or lacks statements of limitlessness) then it has some.
Example: "Medaka is stated to be able to learn skills with 120% of their original strength. But Medaka cannot learn skills that exceed her physical limits or styles. Therefore she is not automatically stronger than any of her opponent"
The person in this argument holds the statement of there beings limits to be absolute truth, ignoring the possibility that the author lied to trick the reader. The same can be said of Nisio Isin: He never intended for his characters to be pitted in battle against characters from other works of fiction, so therefore statements like this do not hold true when comparing the verses to other works of fiction necessarily. Furthermore, there is the possibility that in - universe, the statement was just a trick to make the life and death of the other characters in the verse more entertaining.