User blog comment:RainbowDoor/Prisma's Global 7* Tier List/@comment-26412845-20150909235308

I've decided that once I get the time, I will change the key and tiering around. No more confusing S+, A+, etc. It will simply be S, A, B, C, D. No one can go lower than D because all 7* units can be used efficiently. Also I've recently made a few changes to S tier units