that's not an argument against haki, we have no idea what haki is capable of, clearly Oda is still developing it, we have no idea what the strongest Haki users will be capable of
some random colosseum fighters beating some random haki users doesn't tell use anything at all, why hould u even assume it would? most were fodder and clearly only the characters in higher tiers have haki strong enough because in the world of OP it's more exclusive than DFs, and none of the higher tier characters have demonstrated just how powerful world class haki can make u
fujitora stuff ... what?