Tyson Fury believes he is the more determined fighter as he prepares to face Oleksandr Usyk.
Fury and Usyk meet in Saudi Arabia on Saturday, May 18, with all four heavyweight belts on the line.
The winner will become the first-ever undisputed heavyweight champion of the four-belt era, shown live on DAZN PPV.
Both men are undefeated, but Fury has no doubts about his chances of emerging victorious.
"Why will I win? Because it's what I do. I win, win, win no matter what," he told Sky Sports. "I've always won.
"What I deliver is victories. Whether it's by an inch or a mile, I deliver every time. Sixteen years as a pro, I've been delivering my whole life. They should call me the midwife because I always deliver."
Asked how he will make sure of victory, he added: "I'm sure Sugar[Hill Steward, his trainer] has got an idea for what he wants me to do in the fight.
“For me, I'll figure it out when I get in there. I've seen many styles before. I've fought orthodox and southpaws, tall, short, fat, thin… I've fought them all.
"So I'll figure it out when I get in there."
Fury concluded: "At the end of the day it comes down to who wants it more on the night and I think I'm that man.
"This is the era of Hector and Achilles. When there were two top fighting men in that day, the two best was Hector and Achilles. This is it. This is for who's the Hector and who's the Achilles.
"I believe the Achilles is me."
Live on DAZN: Check your region for PFL and PFL Europe on DAZN. Click here for details.