normal answer: no clue bucko!
obligatory elitist fighting game answer: get a fucking arcade stick you scrubbbbb
I have trouble understanding how people prefer arcade sticks. They're big and cumbersome, and I hate having to use my entire hand to wiggle around a giant stick to make a virtual man move.
To each his own, though.. Not knocking it, I just don't like using them.
They aren't all huge, set it on your lap. The sticks can be somewhat smaller too.
The pros of a stick are an easier to comprehend directional system (its easier to tell when its a Down Forward on a stick than on a analog stick), bigger buttons that are all lined up (useful for games like marvel where you can mash buttons for bigger damage during supers, or games like Street Fighter where you dont really care what version of a Hadoken comes out as long as one does, do QCF+ rapidly tap all 3 buttons to increase the chances of one coming out...), plus its pretty natural if you're used to going to arcades.