I thought graves was meant to be a tank marksman, but I also thought tanks/juggernauts aren't suppose to have all that slipperiness; and here walks in graves, 200 armor/mr with a dash every few seconds, even assassins can't keep up that kind of slipperiness.
I think the bigger question is, What is Grave's defining weakness?
I think Riot was comparing him to Bruisers like Jax or Vi. His dash is probably comparable to theirs. But for a Ranged champion, he's so dangerous at close range due to his shot gun mechanic.
With that in mind, You would think his main counter would be someone with longer range. Someone who could kite him, and out duel him with superior DPS. But that is kinda moot, since he's played in the Jungle, The only other ADC that really Jungle's is Kindred, and invading his Jungle is risky since he's so good in close quarters.
