in addition to all the mention stresses in B.I's life during this time there was also the fact that he was the leader. this was during Mix&Match. dealing with everything SMTM and M&M (new members & old members competition and all) is tough but then he is also the leader of iKon so he had a certain image he was responsible for showing, people he had to take care off and always show his best to (including Bobby, who obviously didn't need any care since he's bobby), all this can break a person. having to shoulder all this on your own.....it's not easy. even though he had a tough run, his last performance had impact and it me, it beat out every other performance, because of what it symbolized and because of the impact it had. to me, B.I is the real runner up of SMTM, Bobby still gets the trophy (cuz he's Bobby)