Board Thread:Naruto Discussions/@comment-10452902-20170520191921/@comment-10452902-20170525210000

With the ranking system, we don't exactly know what makes something for example + instead of - or just the normal rank, it is never explained. Very little in the series is ever explained despite having ten plus years. Kirin is more of an A ranked technique because despite how strong it is, it doesn't have overwhelming power that makes it near impossible to learn even though yes, it is said to be S ranked. Techniques like Sage Mode, Sage Art: Rasenshuriken, Impure World Reincarnation technique and Immortality technique are more on the S rank level. On the Kekkei Genkai side, certain techniques would most definitely be S ranked such as Kamui, Izanagi, Izanami, Susanoo (especially it's perfect form), Tsukuyomi, etc.