By Owen Fulda, courtesy of The Daily Star

ANTHONY JOSHUA will never be in the same league as Muhammad Ali, according to Frank Warren.

The boxing promoter also claims he has a better British heavyweight prospect on his hands in Daniel Dubois.

Joshua stopped Carlos Takam in front of 75,000 fans at Cardiff's Principality Stadium to retain his IBF, IBO and WBA belts. It extended his unbeaten record as a professional to 20 fights and the 28-year-old is fast becoming a boxing superstar.

But Warren, who has been in the sport for more than 35 years, says Joshua still has plenty to prove and has branded comparisons to the legendary Ali as

“stupid”.

"Let’s get it right, Tyson Fury had to vacate the IBF title,” he said on talkSPORT.

“AJ picked up the title by fighting Charles Martin, who is possibly the worst heavyweight champion I've ever seen in boxing.

"He did what he had to do against Martin, he won the title. He then fought Wladimir Klitschko and fought Dillian Whyte.

“Klitschko was coming out of 18 months of inactivity after being soundly beaten by Tyson Fury and Dillian Whyte is a decent young professional but he is not what you consider a world-ranked opponent. Dillian Whyte wobbled him.

"Klitschko had him on the floor. It was one of the most exciting heavyweight fights I have seen for years, it was a great fight, but it wasn't Muhammad Ali, it wasn't Joe Frazier, it wasn’t George Foreman, it wasn’t Kenny Norton, it wasn’t Earnie Shavers, all these guys.

"Joshua has had three title fights and comparing him with Ali? It is beyond stupid.

"He has got a heart like Ali. Ali had a big heart and AJ has got a tremendous heart.

“He has not got a bad engine, I've seen him a couple of times where he has got a second wind in fights.

"But what he has not got is Ali's chin. Anthony Joshua does not have Ali's chin, that is for sure."

And Warren believes Joshua could soon be replaced as the face of heavyweight boxing by Daniel Dubois.

Dubois has won all five of his professional fights so far by knockout and the 20-year-old reportedly put Joshua on the canvas in a sparring session.

"I try not to go over the top but I personally think, at this stage of his career, he is the best heavyweight I’ve seen in British boxing in my time in boxing," added Warren.

“He has something special. He has sparred with Anthony Joshua, he has sparred with a lot of professional fighters and he has more than held his own.”