I'm rather confused now. Can someone describe the workings of GAON and Instiz and which is a more trusted and relevant source that depicts 'chart slayage'?
I've always thought Instiz is a much broader version of Melon cause it included 9 other charts and is where All-Kills and Perfect All-Kills are judged. Then I start to realise that the song rankings on Melon and Instiz are very very different.