Talk:Winter 2018 Event/@comment-2001:569:78A2:2800:DD8C:F5E6:12AA:6B86-20180319083918/@comment-26082284-20180319101129

Drop tables are different for A rank and S rank on each difficulty. (technically speaking they are even different for each enemy formation but 98% of the time devs use the same tables for each formation on given difficulty). So there's really no hard rule about drop differences between S and A ranks and it's best to check each case individually.

In this case S rank (on casual) have over 5% for Tashkent and over 3% for Gangut, while A rank only 2% for Tashkent and abysmal 0.6% for Gangut, so it's definitely better to go for S rank if you can.