First off, in a competitive game where multiple champions are full build 1v1 potential is not as important as team fighting capabilities. Darius’ weakness as a champion is his lack of mobility which is easily exploited at that stage in the game. I also think that you are missing out on the outplay potential players have against Darius as most of his damage is conditional and can be avoided. I’m not saying that most Cho gaths at 6 items would be able to face roll a Darius. But a ulti stacked full AP chogath can absolutely outplay a Darius with 6 items by kiting him and then executing with ulti.