Jack survived against an Admiral, a former Fleet Admiral, and a Vice Admiral who should still be in the high tier range, then survived against an attack from Zunisha, who is the size of an Island. To put this into perspective, an average African Elephant can weigh anywhere between 5000 and 14,000 pounds, and it's trunk is powerful enough to lift SUVs. Now imagine how much an Island sized elephant must weigh, and the force in which it can swing it's trunk.
Do people honestly think Duke and Neko have put him down for good?