User blog comment:LionRed/Rayleigh's full power/@comment-6540043-20130217204932/@comment-122.59.95.9-20130217223510

plus he only mastered 1 kind of haki rayleigh mastered all 3.

so that would mean that Z is only a master of armament haki and rayleigh is just a haki master because he able to use all 3 to a high level