By comparison with is synonymous with the phrases when contrasted with, in relation to, and in contrast to. These phrases are used to illustrate the differences between two or more things or concepts. When contrasted with draws attention to the discrepancies between two items, while in relation to emphasizes the connection or association between them. In contrast to highlights the opposition or dissimilarities between them. Using these phrases carefully can help a writer make clear distinctions between the objects being discussed, aiding readers in grasping the intended message. In sum, by comparison with can be replaced with one of these synonyms to better contextualize the comparative relationship between things.