Can we talk about Darius' counterplay

Because there doesn't seem to be any. And i know im gong to get shit tons of down votes but his entire kit is unhealthy game play. Champions should get punished for building defensively in the sense that they can't dish out thousands and thousands of damage per second. Go look at my last game. The enemy darius had warmog's thornmail, spirit, b.c, and deadman's. Out of all of those, one is offensive. But it took 4 of our team to take him out. And the problem is he shouldnt be the focus. But he HAS TO BE FOCUSED. because if not he will dish out more damage than anybody there. Like why. Let me just bring up some math for you people. I dont care if you downvote because you can clearly see the actual truth behind this. TL'DR on bottom Darius (Q)Darius heals for 12% missing health for each enemy champion hit by Decimate's blade, up to a maximum of 36% missing health. The hilt of Darius' axe will not apply Hemorrhage. So basically anybody melee can't do anything to him outright. So of course ranged will be his counter. HAH you thought. (E)PASSIVE: Darius gains bonus armor penetration. ARMOR PENETRATION: 5 / 10 / 15 / 20 / 25% ACTIVE: After a brief delay, Darius Airborne icon pulls in all enemies in front of him, Slow icon slowing them by 40% for 1 second, and briefly grants Sight icon sight of the area around the pull. armor penetration. Like it isn't bad enough that if you are even in proximity of him you will get slowed and destroyed. He will just do more damage. (W) ACTIVE: Darius's next basic attack within 4 seconds gains bonus range, deals 40% AD bonus physical damage and Slow icon slows the target by 90% for 1 second. If Crippling Strike kills its target it refunds 30 mana and half of its cooldown. Crippling Strike resets Darius's autoattack timer. So he gets a bunch of slows. Do not sit there and say "he is immobile" No he is not, his base movement speed isn't even low. Darius mov. speed- 340 A good example of someone who is mobile- Katarina, her mov. speed? 345. only 5 movement speed in difference. what even. ANYWAYS, let's look at his ult. You all know exactly what his ult does. It is free. It even does BONUS DAMAGE. Using an assassin as an example is kind of diffucult but put it in this perspective. If katarina got extra damage per reset. The world would fricken explode. Everyone would cry opop. I really want constructive thoughts on this not some b.s "get good" Any negativity will just be reported c:

Tl;Dr Darius' kit is unhealthy and should probably be looked at