Am I projecting ?

My brother is 3 years younger than me and he has always been a mamma's boy. He never excelled in anything but I was proud of him even if he didn't have all the talents, he's always been my baby brother and he is perfect the way he is. My parents have always told us how proud they are of us, each one in our own way and for different things but today I felt a pinch in my heart. We were all in the kitchen getting ready for dinner and mom started going on about how proud she is of me, how she's not worried about my future and I got emotional. I told her she shouldn't worry about my brother's future either because he will be a great person, he is one today, mom is just proud of different things when it comes to him.My brother got really quiet, he added that mom should not compare and I snapped at her and told her that if she wasn't proud of him, she should not tell him that she is proud of me, because it would sound like a comparison.I was raised in a very strict house, my parents don't tolerate disrespect and what I did was not right and my brother and I got in trouble. I got grounded, my brother got extra chores. I love mom and I'm sorry, I don't want brother to feel bad because of me and I don't want him to think he's not doing enough.My question is am I projecting ? Is it possible that mom telling me how proud she is of me felt like she was comparing,like she was telling me I was excelling because brother wasn't ?