Right.Don’t blowers and nitrous technically replace displacement? I can have a smaller engine that acts like a larger displacement engine without changing the stroke/bore size of the cylinder.
So if you apply 15psi of boost to a 1-liter engine - it acts like a 2-liter engine.
Apply that same number of boost to a 5-liter engine and it acts like a 10-liter engine.
So applying the same technology to a larger engine gets you the same increases in power.