I don't see a 3" height difference between these guys at all. Max I'd put it as is a 1" - 1 1/2" height 'advantage' for Fury. I think he has a clear reach advantage though. He also has good speed and skills for a man his size, and is good at cutting off the ring and using his superior size to press and corner smaller opponents. Wlad as we know isn't what you'd call a 'smaller opponent'.
We will see if Tyson is able to fight off of the back foot, or how he can match an opponent who he won't be able to corner and who has a superior and quicker jab to his own. I think Tyson will have his moments as his speed and combination punching might even trouble Wladimir if he can close the distance. I think this will actually turn into a good boxing fight rather than the clinch-fest some might expect. Fury will make it interesting, but Wladimir should ultimately control the fight with the speed of the jab and his ability to fight on the outside. He wins by UD.