Dubois should wait 3 years for AJ to be 33 years old, and on a clear physical decline. At that point he will also be peaking physically and know his way around the professional ring. If it was now then Dubois would be too raw. In 3 years time then Dubois would be favourite assuming he continues to develop and progress on the same trajectory
Dubois is only 21 and has very little amateur experience. Last fight was good for him, showed the areas he needs to work on and he needs more fights with big strong come forward C-B level fighters like this. He's got lots to build on - big strong powerful, good jab, decent footwork. But lots to be addressed. Far too early for him to be in with the big boys and AJ would dismantle him.
Dubois isn't ready for AJ. Two or three years down the line, it might be a good bout to see depending on how they've both gone on.
DDD one of the few who has a chance but no one currently goes over 30% which is high. DDD fights better when pressured so it will be a good one but Joshua is Joshua and DDD is not on his level , if anything what separates them most is ring IQ. AJ really knows how to set things up , DDD not so much and AJ will be that more difficult by 2022.