How does cid make power?

Most the V8 builds you look at use similar parts to archive a certain hp eg.. 500 hp
Don't matter if your talking a 289 Ford, 350 Chev or a 440 Mopar etc... Not like the 289 gonna need a 100 cfm more head flow and 80 degrees more cam etc.. Than a 440 for same power. But yes the powerbands are gonna be very different.
Check out E.M test of 500hp small block vs. 500hp big block. Other than style points, and magazine headline blurbs, the big block DESTROYED the small block in multiple ways...... primarily due to the displacement differential (383chev vs 454) (torque, drivability, cost)