Don't have the heat of a fighter and lacks mental fortitude. Glass of chin , glass of mind. Look at his eyes after he was dropped by Lee . They were popping out of his head like Hauser in Total Recall. Its was like he thought another clean shot would kill him. He just isn't cut out for the hurt game.
Oh I don't know about that,maybe Jacobs best way of winning would be to do that but it would be natural for him to be wary of GGG and likewise GGG will be in boxing mode which he does so well,his jabathon against Lemieux was as clinical a performance i seen in a while.