Standing next to your older brother is another standing older brother of yours. They're trying to compete, to see which of them can stand the straightest and tallest.
Your older brothers are trying to compete to see which of them gets to go to きょうと with you. You won a free trip to きょうと, but there's only one other ticket, so now your brothers are competing for you.
Currently there are no similar looking kanji which exist in the WaniKani learning system