Wilder's right hand is a thing of legends when he times it and throws it down the line straight and true
Stevenson's left was far more effective and versatile, could be thrown in offense or while backing up, or while fighting in the pocket. And he didn't have to telegraph like Eddison to throw it. Wilder had the touch of death and considering how light he was relative to the HWs he fought you'd have to give him the edge in power. But in every other metric Superman's punch reigned supreme.