I've been trying to figure out like crazy(since I can't find anything on google) do arcade sticks have any advantage over regular ps3 or Xbox controls?

For example, my friend says an arcade stick can take 3x the commands a normal controller would take.. Is it true? Should I buy an arcade stick if I want to get better at multiplayer fighting games?

The game i have in mind is ultimate marvel vs Capcom 3 .. I want to know if my skills are limited using a normal control..

Please serious answers only.. I will be happy to give best answer to whoever can correctly answer