The key to the fight is timing and spences chin. Brook will catch him and if he can time the speed that right hand against a leftie is a huge shot....If Brook can wobble Poter more than once all over the show he can defo catch Spence. Who has been stunned against relative non punchers.. I think Brook will pull this off but it will be close. As for being a 1-2 puncher against a guy who has speed and power but can throw wide hooks its may not be the worst thing in the world to throw straight and hard and pick the right moments to counter... If Brook can get Spence going backwards he has a chance of getting in there with Thurman as being the he best at 147