Adjusting rewards/tiers

Hi all, 

Is it me or earning rewards in pro are a bit too random? Some weeks 60+ people manages to get max rewards, other weeks only top 5 five barely reach max rewards or even only 7 chests…

Its just too random from week to week. 

Opinions? 

60+ = cheaters are active
5+ = normal

Last PL was very easy so lots of ppl managed to get to top tier