Earlier quoted context omitted.
Irrelevant. The relevant question is, are unattractive people on trial more likely to be guilty?
It's not irrelevant. The fact that unattractive people are more likely to be found guilty doesn't mean anything without knowing whether or not they are more likely to have committed the crime.
If you read the article, unattractive people are more likely to be found guilty /by jurors who react emotionally/ tather than rationally.