I hear ya but I'm not really sure what it has to do with the question I'm posing.
Kaido's emphasis on Roger's Haki and how it trascended everything else doesn't really make a lot of sense if even his strongest rival was simply just a powerful haki user. There'd be no point in putting so much emphasis on "Haki" being the bees knees, if that were the case, is basically what I'm getting at. So there's probably more to Rocks than meets the eye.
Kaido's emphasis on Roger's Haki and how it trascended everything else doesn't really make a lot of sense if even his strongest rival was simply just a powerful haki user. There'd be no point in putting so much emphasis on "Haki" being the bees knees, if that were the case, is basically what I'm getting at. So there's probably more to Rocks than meets the eye.
Oda already giving him his haki clash with harland in this flashback to show that .