Really kind of impossible to identify. His Terror may act completely different from someone else's Terror, which makes it kind of a crapshoot, besides the fact that a different ball won't react the same but weaker. All elements that make up the ball contribute to a reaction, and when you change one, you get a different reaction. Also I imagine with a weaker ball you'd have to play a different part of the lane, which also alters ball reaction, so what you would really have to do is find a ball that reacts similarly from the part of the lane you want to play to his Terror from the line that he plays, but that may result in a ball that reacts very differently from the Terror.
