Everyone but Lord Arioch rates all opponents with a base of 5 stars across the board. If you are exceptionally mean you'll get 4 stars, but didn't see anyone get 3 stars on the first 13434232743 pages I checked(edit: but a few one stars)
So if you want an excellent rating, play them at your own fortune. I was going to say 'at your own risk, but didn't want to lie.
