Fury has a tendency to show some skill then showboat and gloat about what he has just done. I think he has to take those moments more seriously in this fight,he has to overwin to take the title off an American in America, and the best way to do that is when he shows some skills, positions Wilder or tricks him into falling in, stick him with a hard punch instead of throwing a extra shimmy and soft jab. He is a master at setting them up, but never delivers the killer blow.
Wilder is almost exactly the opposite, which is why it is such an intriguing fight. I just don’t see him imposing a game plan on the fight, he never has had to box before, I can’t see him creating the openings he needs, he just has to rely on them happening, which they will unless Fury can damage him.
So if Fury is true to his word and has worked on his power, but still goes 99% the same game plan as last time with a few more powerful punches when he has maneuvered Wilder into position, then I think Fury will take him. If the power is just bluff, then I think Wilder will take it.