"He brings Roger up as an example of his point, "ability" isn't the key to conquest, but haki, "it surpasses all"
Follow by his new attack"
How insane is KAIDOU's knowledge? He first completely described Luffy's awakening completely correct even without knowing any previous stories about Nika or anything, he described it in the same way as the gorosei, besides saying how awakening is achieved, now he is labeling and describing what the haki really is, key to success (Haki). And it is worth mentioning that KAIDO has both HAKI and DF.