Some of yall here are gonna be surprised at how Ngannou makes this look. Stipe's upright stance allows him to throw quicker straight 1,2s but defence is non existent. Ngannou has fantastic range, he's deceptively quick and his herky jerk in and out bounces make it look like he's there to be hit. In the pocket, Id choose Ngannou. This fight will definitely be won in the pocket. He's much more aware of distance and punches in this space than any other HW at the moment.
Sure Stipe is good in the pocket but he's purely offensive, whilst Ngannou takes care of his chin by keeping his head of the center line to avoid the straight. His straights wont be as effective in the pocket imo.