 This is a visual argument (and the second premise a visual premise) at least in the sense that it is conveyed visually (and not with the words in our paraphrase). The verbal paraphrase summarizes the argument, though the non-verbal visual elements the cartoonist uses must be replicated if we want to exactly replicate their act of arguing. This is especially important when such arguments are open to contrary interpretations or have meanings that are difficult to convey in words. 