One thing you can't change or scale is Physics.  Air molecules behave according to certain laws of physics.. Ever heard of Reynolds Number?  I'm not an aeronautical engineer, but I do know it has to do with the ablility of a larger wing (actually the chord line) to carry more per square inch/foot.    It's a factor of the ability of molecules to follow the surface of the wing and it's effect on the pressure or lack of pressure , due to the flow.  It's actually used in fluid dynamics, and air behaves like a fluid.

Basically, it's why "Bigger is Better".   

Dash