The editorial cartoon uses a number of stylistic features to create a powerful characterization of North Korean leader Kim Jong Un.
How much “certainty” does a cartoon have though? Does an editorial cartoon have more or less certainty than another type of cartoon? To what extent is the knowledge we can gain from this cartoon reliable?
There are no sources given, there is no precise data, and the visual depiction of Kim Jong Un is not realistic. Given the relationship between North Korea and the U.S. (where it was published) issues of bias could also be discussed.
Just because a text is not directly based on sourced data or published facts does not mean it can be dismissed though. Some art can provide reliable knowledge in some circumstances.