ggg has great power and one of the best chins in boxing. ggg will realise very early on that geale cant hurt him. would be a great fight. geale would certainly have his hands full.
No doubt he has great power, however you don't know he has a great chin as it has never been tested. Unless he catches Geale early, GGG will not be able to match Geales intensity or stamina and will lose via decision. It's sad that Geale doesn't have much power because if he did, he would've been laughing at Sturm during their fight.