Roger has no feats(but is the strongest of them due to implication), Garp and Sengoku have basically no feats worth a damn, and Whitebeard has feats that make him the strongest human character to appear in the manga based on feats alone but was ultimately killed by regular shit like bullets and swords(after having half of his head burnt to a crisp).
But this is the Hulk, who has half a century worth of feats in a medium that goes to really ludicrous lengths, including from what I've heard sinking the shoreline with a step and punching a meteor capable of destroying the world.
Gee, I wonder who will win?