“Dana is alright. I’ve got a lot of money from him, I made a lot for him. I probably should have got paid more.”
It comes after a number of UFC fighters, including current champion Francis Ngannou, have voiced their concerns over contracts.
Lesnar made his MMA debut in 2007, beating South Korean Min-Soo Kim in just over 60 seconds.
The American won the world heavyweight championship in 2008, but since then his record has varied.
He last fought in 2016 and the fight was declared a no contest after Lesnar tested positive for a banned substance post-fight.
Lesnar said on The Pat McAfee show on Monday: “I really can’t compare the two guys. Honestly, my relationship with Vince is so different than it is with Dana over the years. Vince and I have had a love-hate relationship for the last 20 years, but it’s been good.”
Lesnar made his WWE debut in 2000, and has gone on to become an icon in the sport – winning two Royal Rumbles during his stint.
“We have a lot of water under the bridge. I have a lot of respect for both men, but, dealing with Dana, it’s just a totally different business approach.
“I met Vince when I was younger. I look at Vince more as a father figure actually, because I’ve learned a lot of things from him, and I was able to carry those things over and handle business with Dana.
“So, I mean, Vince is a self-made person, so is Dana, took the company and made it public and made big, big (money).”
Since his last MMA fight, rumours have been circulating that Lesnar could make a return to the Octagon, but it looks like he’ll be sticking to the ring for now.