Upton (15-0-KO3) was accused by Cheeseman (13-0-KO8) of feeding off journeymen but the underdog remains confident of claiming the WBA ranking title at York Hall.
Speaking first, Cheeseman said: “Camp’s gone really well. I’m a full, big light-middleweight now. I’m maturing and hitting harder.
“I showed last time out that I can box and fight and change to the opponent in front of me.
“Come Wednesday night I’ll show everyone that I’m levels above Pauly Upton. He’s a fraud really and has boxed 15 journeymen. He’s got a real test on Wednesday.
“Pauly Upton is alright for a few rounds but he won’t be able to keep me off for 10 rounds. I personally thought he lost to Adam Jones.”
Upton was quick to retort: “You can only beat who they put in front of you.
“No matter what he thinks, I beat Adam Jones. The win’s on my record. I shouldn’t have fought at that weight – I was fat! Now I’m at my correct weight.
“This belt is a massive thing for me and I’ll be taking it. This is a big opportunity for me to provide a better life for my family and kids. It’s huge.”