@Craig366 I think it's because host scores are now calculated to the nearest tenth, whereas guest scores are still calculated to whole or half stars. Forgive me, I'm not a math whiz so not sure the proper terms, haha!
But, for example, a guest who has an average of at least a 4.6 is rounded back up to 5. A host who has an average of 4.9, well, they still get 4.90. So until a guest has so many low scores they drop below 4.5, they can still be shown as a 5 star guest.
No, it doesn't seem fair.