"Just dodge the ability"
It's really, really funny to see people use that argument, specifically for Darius. It's as if his players think they themselves are complete idiots for only being able to use his simple kit, to the point that they would never think to use the Q when the opponent's dash is down.
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His only ability that can be dodged is his Q. And for some reason Darius players use this argument as if none of them know how to land it.
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His early-to-mid strength comes from his ability to trade autos and get bonus AD for doing nothing more than clicking the opponent.
There's only so far you can go in pretending your champion is balanced just to pump up your own ego.
A champion's skillset should not make it so that the matchup is determined solely by whether or not you hard-counter them. As it is, the only champions with a high win rate against Darius are ones who directly counter his kit. Jayce, who never has to get into range. Riven, whose shield and mobility can allow her to negate his passive bleed. And any ranged champion who can go top.
The matchup should not be decided in champion select. He's far too simple a champion to allow the only ones who stand a chance to be ones who picked after him.

against
or whatever. Actually though, mid lane has a lot more cancer matchups than top does with the whole "mage vs assassin" thing.