Is it normal to be more rational than an angry jealous person?

My brother Ashley isn't rational, and he's not logical, he deliberately makes contradictions, he rarely these days yells at me, and he calls me a dickhead even when I mention that something is too genius, I don't act that way with other people who mention genius, and with me even thinking I'm a genius, just for what I think, what I believe, my brother yells at me and insults me and loses control, I don't, I talk and act in a calm way, I draw conclusions from inferences, and I don't have anger, sadness, or any negative emotion, I'm more rational than him, is that normal?