It's very peculiar. On one hand, we as a community want people, the media, the masses to be touched by Michael and love him. Yet, when someone famous actually does love him and has shown that throughout their whole life, we doubt their intentions and criticize their talents.
From what I've seen, Chris Brown is like one of us. He obviously loves Michael and put his heart into that performance. He made an unrelated mistake, but it should not haunt him his whole life and cast a shadow on everything he ever does.
If one of us went on national TV and performed, I wouldn't be surprised if they too are critiqued to no end.