Jay Deas, trainer and co-manager of WBC heavyweight champion Deontay Wilder (40-0, 39 KOs), says his boxer's power is unmatched in the boxing world.

Wilder went the distance on one occasion, when he capture the world title in January 2015 with a twelve round unanimous decision over Bermane Stiverne at the MGM Grand in Las Vegas.

But in their 2017 rematch, the outcome was the complete opposite of the first contest as Wilder demolished Stiverne with a first round knockout at the Barclays Center in Brooklyn.

Wilder is now fully focused on landing a showdown with IBF, WBA, IBO, WBO heavyweight champion Anthony Joshua (21-0, 20 KOs).

Their fight is regarded as the biggest match in the sport of boxing.

Deas believe his boxer's punching power makes a huge difference in any fight and Joshua is no different.

"Punching is God-given to a large degree. You can improve punch power through conditioning and proper technique by about 10 to 13 percent. But most of it is God-given. One guy hits someone and something happens - another guy hits someone and nothing happens," Deas told Sky Sports.

And Deas also smiles at the constant criticism over Wilder's technique in the ring - which some call 'windmill punching.'

"People don't know what they are looking at. When a guy is as tall as Deontay [6'7''] it can look awkward. He doesn't do everything textbook, for sure," Deas said.

"Look at the Klitschko brothers. Wladimir was the most technically correct fighter of the past 20 years. Vitali was unorthodox - hands by his side, looping punches. They will both be in the Hall of Fame. There's more than one way to do things. Look at the Bermane Stiverne fight. The first knockdown was like Wladimir - technically perfect one-two. The second and third knockdowns were more Vitali."

And pound for pound, Deas rate Wilder as the world's biggest puncher.

"I do. Nobody punches as hard as Deontay," Deas said.