Every fighters dream is to fight Manny and Ugas was very lucky that time that Spence has an eye injury so he replace him make good about himself and upset the legend that night.
That's why there are still gamblers who believed that maybe Ugas can go toe to toe with Spence and have a chance to again upset and unify the belt in this division.
That is just how the game is, someone who you taught will never lose to an underdog, might also lose sometimes. I think these two fighters are not that far from each other because anyone of them can beat each other with enough practice to counter each other's techniques. they gave Spence a high percentage winning this fight but I think he is not gonna be the same since Ugas has been already fought and defeated the legend, Spence is nothing to him unless Spence will gonna surprise us with his unmatchable speed and power to knockout Ugas.
I see the power of Spence is his advantage, and he is big, unlike Pacman who is small and cannot enter the defense of Ugas. This is certainly a big fight, a challenge for Ugas being a champion and Spence to prove to the fans that he is still in boxing and still as good as he was before.
Yup, Spence is the bigger guy in this fight, although I speculate that both have the same length as far as wingspan is concern. But I will give the power to Spence and the experience, although Ugas has some good matches, but Spence has fought bigger names.
But as some boxing fans pointed out, this is still a very close fight as Ugas is not an easy opponent to defeat. He is very hungry to prove himself that he is also a champion so he should be respected.