Ruiz has the higher confidence in this rematch since he already stopped AJ on their first encounter. And this is an immediate rematch. AJ dared without a break nor tune ups which is very risky career wise. But I don't think AJ quit on their first encounter. It was the referee that stopped it.
Boxing is an art and Andy Ruiz got the better of Anthony Joshua in the first fight and there were reports that Anthony Joshua got knocked out in the gym while training for the Andy Ruiz fight and he was concussed coming into the main event and since it was his debut here in the US he was having panic attack in the back stage before coming to the ring and now he has a loss in his career and i am expecting him to fight better in this fight as it will be a career changing rematch and one more defeat will end the hype he created.