360 stroker how much HP is picked up if everything else stays the same?

For the strokers to make better peak and or power curve it's would have to come from efficiency, more power from the same amount of fuel and air and or more fuel and air. Since the top end is the same should be similar efficient, actually there should be some frictional hp loss and a 360 can spin higher rpm to make up the static displacement differences to have same dynamic displacement. So where does this bonus power come from?


And as for torque difference if both geared right should have similar torque to the ground.