RIVALS RNG - what affects % of reasonablle loot

hi all … i would just to like to know - what exactly affects drop rng of rivals (i mean their loot)? of course it should be their level - lvl4 best chance for good drop … but is it level of region of their occurrence as well? lets say - region xy has 7 active rival, and score of the region is 16 for example - i destroy the highest rival and region lvl goes down - that means drop rng % goes down as well on remaining lvl4 rivals ? … or everything what affect their loot is their lvl no matter on which level is the region
sorry for my idiotic sentence structure, english is not my native language

2 posts were merged into an existing topic: Reaper how to Get Max Yield