Who, in your opinion, would be the most genius artist?

Its not really meant to be a personal question, but asked with regards pessimism. I mean to say, which artist do you think truly understood life's suffering and tried to contemplate it through his artistic imagination?

For me, its obviously Vincent Van Gogh. He struggled a lot in his life, and did not succeed in making his paintings popular. But almost all of paintings (or entire ones) depict his innermost melancholy manifested in different forms.

But to me, what elevates his painting, is his lack of realism. I mean, his paintings are not often consisted of proper strokes, color fading, or craftsmanship. He did not try to make his paintings realistic like Vinci or Michelangelo who created realistic paintings. Thus, I believe, Van Gogh, elevates art from accuracy of craftsmanship, found in modern day technical means of "image accuracy", to its highest meaning. Art (even in Schopenhauerian sense) is not about accuracy but expression. Which Van Gogh excels at.