AITA for wanting my graduation dinner to be about me and not about my “impressive” sister

I am going to graduate high school, we are celebrating early since my my family is down for my sisters college graduation. I have always felt my sister is better than me at basically everything. I got by with B she was a straight A student and so on. No one every says it but I know they prefer her to me.

My aunt is not an easy person to impress at all, she was a lot of firsts in the family. We were at dinner and my aunt started to ask about my sisters job she got out of college. The whole rest of dinner was talking about my sister, what she is gonna do and so on. It might as well been a celebration for her.

My uncle asked me about if I am going to college and I snapped at him saying why it doesn’t matter, this dinner is about my sister not me. The table got quiet and my mother told me to apologize. I refused. We got home and I got in an argument with my family who think I was being a jerk. Edit: my sister has her own party with week, that’s why I thought my graduation party would be about me