One more video, in this video the four ball is not actually in the way, it had rolled off the paper donut. The ball hopped twice with a slight change of direction on each hop. The largest change in direction is after the second hop.
https://www.youtube.com/watch?v=Hu5AOYu7f38
Also not trying to pick on you but I see the same thing your last video showed: a bank that was possible without any curve at all being needed (although the side viewing angle gives the illusion that it may not be possible without a curve), a slight curve that did in fact happen of maybe a 1/4 inch, and a curve that ended up looking more exaggerated than it was again because of the optical illusions that are created by the side viewing angle instead of being able to look perfectly down the line of the shot and your drawn line.