I see this as a 50/50 fight.

If Duddy can fight with the same heart he fought vs. Campas I give him the nod on a close but hard fought decision. Especially considering that JCC gases out late in fights.
But Duddy has to make JCC fight inside and make JCC give up his height and reach.

Now there is a big factor in the JCC that will present itself to fight Duddy. He will be guided by none other then Freddie Roach.
I've got a feeling that Roach has set up a mold for JCC to come out fighting using his height and reach if he sticks to the game plan he outboxes Duddy.

With that being said I'm gonna go with JCC by decision.