Why is ironical how does johnny defend his comparison in the outsiders?

In "The Outsiders," Johnny's defense of his comparison highlights the irony of his situation as a marginalized youth. He asserts that "things are rough all over," indicating that despite the socioeconomic differences between the Greasers and the Socs, both groups face struggles. This irony underscores the universal nature of pain and hardship, suggesting that societal labels do not shield individuals from suffering. Johnny's perspective emphasizes empathy and the shared human experience, challenging the notion of clear-cut divisions between social classes.