"I haven't experienced losing as a professional so I can only talk about my experience in the past. But I am going for a knockout.
"He is harder to hit, I'm aware of that, but I know potentially there is more than one way to skin a cat. I'm trying to make this is simple as possible and it's my job to make my opponent look like a novice."
Joshua heads into the contest giving away 14 years in age and 50 contests to the vastly more experienced Klitschko, but believes youth will give him an edge.
"I hear a lot about age, but it's a young man's sport," he said. "At the time he has his experience, which will be good to see you through a few rounds, but then the youth, excitement, adrenaline and speed will start causing issues.
"You can't prepare for what I bring to the table, no matter how much experience you have."
Klitschko sees the April 29 contest as being something of a chess match between two equally-matched physical specimen, but vowed to congratulate Joshua if he emerges victorious and be there to pick him up if he inflicts the Brit's first professional defeat.
"You know what kills speed? Anticipation," he said.
"I believe he has a very good analytic mind but there is a difference between you and me. We will see how it goes. We look alike, size-wise and the reach is the same, biceps, punch power.
"We can name a lot of things and the more I look at it there is a copy. Different but a copy. But I am obsessed with my goal to lift my hands after the fight when I leave the ring.
"This obsession is a threat going through my heart and mind. This is like a match game in chess, the other putting the other on the other side to try and use the weakness.
"The better fighter, the better pugilist is going to win. Good if it goes early, good if it goes the difference.
"If you win, I will congratulate you. If you lose, I will help you to come back."
