> 10-star rating system (More nuance than 5 stars) Does one really get anything meaningful out of saying this was a 6-star book vs a 7-star book? Personally I think 4 levels is sufficient. Either it's rather bad, not bad but not good, good but not great or it's great. Anything beyond that will have to be written in words.
Black Panther has a rating of 96% at Rotten Tomatoes. So whatever the scale is, nothing is really meaningful. I've been in the cinema with about 60 other people and a friend. statistically one of us should have enjoyed it but we both found the movie shit. So no, 10 stars is not more meaningful as 5 stars. 2-4 should be enough to still be wrong about taste once in a while.
It also means that 4% of critics did not recommend the movie. In a theater of 60 people, you and your friend would fit into that 4%. So there's nothing wrong with RottenTomatoes.