Scoring Formula for points and stars
I have a theory about the scoring formula and it seems to match what I have seen so far.
Scoring points per level:
(1) All material and pigs carry the same value, whether it is a giant stone block or a balloon or a tiny wood piece.
(2) When more parts are present on a level, each part has a lower value since it is evenly distributed among the parts.
(3) Max base score per room: 100 achieved when EVERYTHING in the room is destroyed.
(4) The attempt on a room is considered complete when all pigs (except golden pig) are killed.
Actual score is based on the bird level and all boosts. So a lvl 18 bird with a +3 hat and a +7 sling will have a max score per level of 2800.
Stars in arena:
(1) This is based entirely on the ratio of your score compared to the opponents score.
(2) The stars based on this ratio are:
5 stars : Ratio of 1.00 to 1.05
6 stars : Ratio of 1.05 to 1.15
7 stars : Ratio of 1.15 to 1.25
8 stars : Ratio of 1.25 to 1.50
9 stars : Ratio of 1.50 to 1.80
10 stars: Ratio of 1.80+
I have not had an exact score at the borderline to know which way it goes.(for example, at 1.50 it can be 8 or 9 depending on how its coded)