bore vs stroke

Yes but your not accounting a smaller pistons is gonna have less force against the longer stroke than a larger piston against shorter stroke.
Stroke is only one part of the equation.

Eg.. A weak man with a longer pry bar vs a strong man with a shorter pry bar could be made to be even depending on the lengths.

Yes, it the bore affects how well the mixture burns, but if the mixture can burn properly more stroke will give you more torque...