Prime Patterson fights the Berbick that upset Pinklon Thomas. Berbick has size and strength but wasn't exactly a heavyweight mega puncher. Patterson was faster and had more skill and perhaps may have hit harder than Berbick.
Patterson on points, Berbick wasn’t precise or accurate at timing opponents on the way in, which he would need, his whole think was get close, push you, out muscle you and wear you down, Patterson would be able to easily evade Berbick’s offence and beat him to the punch.