keep in mind that the higher drop rate means that the character with the increased rate will show up more often compared to others of the same rarity, ex: right now Marduk has an increased rate, but still is an SSR, wich means her drop rate is naturally way lower than an SR, but if you draw an SSR there is a higher chance that its her than any other. (although you would only really notice this difference if you were getting multiple SSR in a short period of time, wich is possible via Space Whailing, rerrolling, or saving an absurd amount of gems and tickets)