How difference between big and small Reservoir? Less force to apply for lock up rear wheel in smaller Reservoir? That's right? Or anything else?

I wanna use hydraulic e-brake. Now i am researching about how it work.

Thank you.

 

Sorry I mean How difference between big and small Master Cylinder?
I make a mistake.

 

Bigger master cylinder = more effort, less throw
Smaller master cylinder = less effort, more throw

 

Thank you so much.