Talk:Rating/@comment-99.58.183.62-20150914222611/@comment-26689808-20150916142537

Well, technically we've only seen 2 SSS rated ghouls throughout the series. The rest are SS or lower.

SS~ isn't necessarily a higher rank than SS, it's used as a temporary rating on ghouls that the CCG have little information on.

Nutcracker for example had an A~ rating, but it was quickly changed to S after the revelation of a dual Kagune.

Nishiki has an S~ rating, which means the CCG are unsure if he should go lower or higher. This suggests that Nishiki has had very few encounters with the CCG.

As for Seidou, well the only person who has a good idea of his abilities is Kaneki. I imagine Kaneki has informed the CCG of Seidou's abilities, though he was unconscious for a long period of time during their battle.