I'm not blaming anyone, Ofc there will be always someone better than you. But he had to grow up in that type of environment with a really big inferiority complex. What he does is his fault, but I feel pity toward him also. That he has to grow up with a GENIUS brother. It's not ml fault, Ofc not.
If it was in the other way, that the big brother is the genius and the little brother no. I will also feel pity towards the little brother.
Although I'm mad at the brother, I also feel sad for him. I can't imagine how is having a sibling like the ML.