Since we are talking about inside english here, I looked something up in one of Dr. Dave's articles that I didn't understand, and I found a surprising fact about inside english (and now I remember it being mentioned in one of his throw videos). Some preliminaries: inside english has spin that throws the OB in the same direction as the cut induced throw. If you think about the first shot in the video where the ball is on the left hand long rail, the inside english will throw the OB into the rail, which is also what the cut induced throw is trying to do. Compare that to outside english, where the spin throws the OB in the opposite direction of the cut induced throw, which is why if you hit the CB with just the right amount of outside english, i.e. "gearing" english, you can get exactly zero throw on the OB.
Yet, at larger cut angles, e.g. 60 degrees, inside english will actually cause less throw than no english. What??! That is counter to what you would expect: you would expect there to be some amount of cut induced throw and some additional throw from the inside english--but there is no additional throw from the inside english, and you don't even get the full amount of cut induced throw. Why is that? My mental model has adopted this explanation: I imagine that the inside english causes the two balls to skid against each other with less friction than when there is no spin, the result being less cut induced throw. In other words, at larger cut angles a CB with inside english can't grip the OB as easily, so the cut induced throw is less.
Now think about this effect: for large cut angles, a small amount of outside English can result in more throw than shots with no English. What??! Normally, outside english counter-acts cut induced throw! Apparently, everything works backwards for spin induced throw at large cut angles: inside english reduces the overall amount of throw and outside english increases the overall amount of throw.
Dr. Dave's article is here: https://billiards.colostate.edu/bd_articles/2007/feb07.pdf