Well, we always see him look out of shape in all of his very important fights, their face-off looks unusual a muscle guy looks down on a guy who looks out of shape but looks is really deceiving the fighter who looks out of shape will knock out the guy who is well toned.
His opponent shouldn't underestimate him when he shows that huge fat and sluggish movement every time he trains because the truth of the matter is, his techniques and skills are some of the most lethal weapons in heavyweight that outsmart his opponent every time he gets in the ring. I think Ngannou has already known this and he is training more than him to beat him in his own game because this is a life-changing opportunity for Ngannou since he left UFC and he could never get some unique opportunity like this if Fury declined the offer.
There is zero way Ngannou underestimates Big Belly. It is actually Fury who is underestimating Ngannou by laughing and making jokes. The way Tyson Fury signed the Usyk unification fight means he is looking at Ngannou like a nuisance. Even the Saudis, Top Rank, Warren, ESPN, and the Usyk team have no respect for Ngannou's chances of winning by continuing their negotiations and even finalizing the deal before this fight happens.
Nonetheless, I still wish that Ngannou would shock the world by landing his deadly hooks and putting Big Belly to sleep.
When you take a good look at the two fighters, there's a noticeable contrast, and Ngannou appears to have a dominant presence. However, when you dig into their records, Fury consistently holds the upper hand against a non-professional boxer. This isn't to diminish Ngannou's skills, but let's be real here - my personal take is that Ngannou might be a bit overhyped.
Of course, Ngannou will be overhyped by the promoters of this event to mislead the casuals. It's business for them so they need to market it like it is the real deal and that Ngannou is a monster with a vicious knockout punch looking to endanger the undefeated and defending champion Tyson Fury. It's even funny there are promotional images where Fury is dressed as a king but he looked slimmer than the real Fury.
I actually thought that putting Tyson Fury's dad in the undercard against any celebrity would make this event big. That old man knows how to market a fight. Here is a short video where he smashed Tommy Fury-KSI and Logan Paul-Dennis Dillon's press conference by flipping and kicking the tables. https://www.youtube.com/watch?v=Tz276erTAVI:D