Sporting a swollen, blackened left eye, and shadow-boxing his explanations of the fight at a rented mansion in St John's Wood, Joshua said: "It was really good, I had fun. I had 44 rounds of boxing as a professional before that fight. Now I feel like I've had 144 rounds.
"I took rounds upon rounds of experience, and I can move forward now on to bigger and better things.
"I don't just like to win but I like to win in fashion, because it adds a lot of stock to my value. We definitely ticked the entertainment box."
By retaining the International Boxing Federation belt and claiming the World Boxing Association crown, Joshua's stock rose overnight, making him a global star of the sport.
Joshua can now have the pick of opponents, and his promoter Eddie Hearn said that the new star of the division could draw any opponent in any global market.
That will be the promotional challenge for the team around the British heavyweight, given the success of the event and the 90,000 sell-out crowd at Wembley.
The public demand will grow for Joshua to face Tyson Fury, when he returns to the sport. "That's why I mentioned Tyson Fury, because the British public would want to see us fight," Joshua said.
Hearn knows that in Joshua, they now hold all the promotional aces.
"We go wherever there is the most money," he said. "Anthony wouldn't mind going to Germany, something different, to face Klitschko if there is a second fight. He would have no problem going anywhere. The States, China, the Middle East, the Principality Stadium. We wouldn't have any problem selling it.
"Anthony will have May, June off, so he is not going to be ready until October. I want him to box in April-May and then go again in October-November every year as regular fixtures."