I agree, he needs to start strong and hurt Usyk if he wants to win the fight. Undoubtedly, he has the power, as 18 of his 19 wins came from KO. If we convert that to a ratio, it's a 95% KO rate. However, bookies will not offer very attractive odds if they believe Usyk will lose. This creates a puzzle for us bettors because bookies are smarter than us; they set odds based on the likelihood of winning.
It's more on logic if Usyk beats Joshua who is also a hard puncher with a good also a good knockout percentage then they figure that Usyk can withstand Dubois' power, and of course, it helps that the fight will be held in Poland where there are many Ukrainian migrated, so it Usyk is fighting in his hometown and Dubois has no prior experience where he fought on enemy territories.
Dubois is facing a big challenge, I hope Dubois's leg is okay now he suffered three knockdowns because of his leg cramps in round one but managed to comeback to knock out Lerena
Here's a video of that fight :
https://www.youtube.com/watch?v=BZ7MCCgf8NA