Try telling that to the ones who think vanilla Wolvie and Phoenix are the worst derps in fighting game history. Vanilla Dante had always been relatively fair compared to those 2, vanilla Wesker and vanilla Magneto. He's popular but the amount of vanilla Dante players who stood out and were highly successful with him could be counted in one finger (PR Rog, Josh Wong, Richard N, maybe Yipes). Even in vanilla he has always been strong but the amount of cheap, ridiculously unfair things he has pales in comparision to others. The invincible hammer is probably about it, the hitboxes of his normals is derp too but it's balanced by how slow they are.
While in UMvC3 they had nerfed the Hammer, his damage and the Hitboxes, with those nerfs he's about as fair as you can get. Which in MvC terms makes him pretty mid-low tier if not for his value as a team character.
That's cheating, you can use one finger do count any number of things. Saying they can be counted in one finger, then posting 4 names is too cheap.