User blog comment:Sylvandyr/The math behind the Battle Arena/@comment-26464603-20150604135754/@comment-5089372-20150604164453

Your correct on the rarity score and all the info you see here comes directly from the games data so it's correct.

I have all the rarity types listed in the [http://dragon-story.wikia.com/wiki/MediaWiki:BattleArenaData calc. data] I just need to get it together. So if you want to help feel free but it's a lot to go through. I also want to go through the most recent game data to make sure none of the older dragons info has changed (happens occasionally).