Undersquare vs. Oversquare Engines

In simple terms engine output at all speeds is determined by intake valve size or actually circumference.
Even at low rpm it is the most important factor. And intake valve size is basically determined by the bore size.
F1 engines are impressive but not as impressive as the budgets to obtain that performance. Typical gasoline is about six pounds per gallon, I think a gallon of “91 octane pump” fuel for F1 weighed over nine pounds. Fascinating tech in F1 but I can’t apply it to anything.