The promoter has hit back at UFC president Dana White's claims about The Sweet Science after the MMA boss agreed a deal with Saudi Arabian investors to create a new boxing league.
White has suggested that the new competition will overhaul boxing and have their own world titles and Hearn is optimistic about the move despite disagreeing with his fellow promoter's claims.
The Matchroom boss told BBC Radio 5 Live's Boxing with Steve Bunce podcast: "I think it's great for boxing.
"One thing I disagree with, is boxing's not broken.
"Boxing is in a great place, it always has been. There's always ways we can improve it, but the fact those guys want to come into boxing shows where it's at."
White's UFC uses a league system to sign fighters to long-term and exclusive deals but Hearn is unsure if the same model will work in boxing.
He said: "I think Dana has a great spot [in MMA] where you can control the fighter, the commercial, everything. You have to do what you're told.
"That's not really going to work in boxing. Also fighters are drastically overpaid in boxing and the margins in MMA are different, so it's going to be interesting."
White has teamed up with Saudi entertainment chief Turki Alalshikh for the new league but Hearn doesn't think they will succeed in their aim to change the sport's world titles.
The promoter said: "For me I get the feeling the league isn't really for the big names of the sport, but I might be wrong.
"Dana's comments saying any belt with three letters before doesn't matter – I disagree. If you really believe a fighter doesn't put huge value on a WBC championship you're mistaken.
"But sport can change."