First thing: You're in the wrong forums area. Please take this **** to the champion feedback area.
Second: You're wrong. You've shown Darius's weak points, but you haven't shown why is strong points aren't too strong. A champion can still be OP while having flaws. Darius's Q is pretty freaking crazy, so early game he is too strong solo top.
You Claim his ult is the only thing that makes him good in teamfights, but you are clearly forgetting about his small but useful grab, oh yeah and his aoe spin, oh yeah and the dot that both of those things apply to everything he hits.
No offense, but you just haven't figured out how to use him yet. Admittedly most people are over reacting, but he's still way more powerful at his role than he should be. Sure there are champions that are more OP at their role, but that doesn't mean that Darius isn't OP, it just means that they are also OP.
Please, don't make another post like this again, You didn't even provide a solid argument, and on top of that you put it in the wrong area. In the future, try to fully understand the champion, and where not just their weaknesses are, but where their strengths are too. You should also try creating rune pages for them that fill in their weak spots, and another that capitalizes on their strengths, playing with both of these pages will help you understand perhaps where people are struggling and why they're crying "OP! OP! He stopped my jungle Annie, he must be OP and needs nerffed now!"
oh sorry, didn't know there was another forum section for this. i did figure out how to use him actually, i actually average like 12+/3- a game with him. yes he is op one vs one, maybe even 2 vs 1, but what is exactly his role ? because he cannot carry a team nor is he a true tank. seems like he is a champ that can go 20+ kills a game, and have their team still lose. sometimes i feel he hurts his team more then helps in the end, and i didn't show his strong points because there are like 3 threads on this summoners section explaining his strong points. What you said is true about his strong points, but plenty of counters to them. It's because people don't fight the way they should fight him solo top. Only thing for people who think he is op is to play him and see for themselves. Because once teams start building and getting their items, he does not fit well into MOST team compositions.