The California native arrived in London last week and is getting ready to fight Joshua on Saturday at The O2.
Breazeale has admitted that Joshua is a popular boxer, but has vowed to disappoint his fans.
Speaking on Sky Sports News HQ, Breazeale said: “It’s nice to be here and good to be in London. It’s a good place to be right now. They love him (Joshua) here but I am sorry I have had to come over the pond and ruin their day, but it’s one of those situations.
“I’ve come to win and put on a big show and me and Anthony Joshua are going to fight on June 25 – and I am looking forward to it.
“I am probably the biggest fighter he’s fought, 6ft 7ins, 255lbs. I’ve probably got the same hand-speed, probably a bit more power and I can definitely take a shot.
“It’s going to be two gladiators going at it and Anthony Joshua knows that.”