How does cid make power?

On that level, yes, but when you watch the episode and how they word it…. There question is basically IIRC, “500hp, how do you want it?”
And that’s it. Nothing more, nothing less.
That’s a bad example. How do you compare two engines which have a huge difference in bore spacing? You can’t.

As I posted earlier, you have to compare engines with similar architecture. Otherwise you’ve wasted your time and didn’t learn a thing.