i have limited knowledge of street fighter but ive played a couple of games and seen one of the animated movies (its some sort of bonus feature on an anniversary edition or something.)

if found ken usually has more useful moves and have always preferred using him. he has hadoken and slightly different moves to ryu. im pretty sure ken is the older one or at least the agressive one who doesnt hold back. whenever ive seen ryu and ken fight, ken usually wins. theres a flashback in the film where they are younger and ken is winning. when M.Bison controls ken and makes him fight ryu, ken is winning but i think thats because hes violently fighting and not holding back where ryu doesnt want to fight. there so even that its hard to choose. even the votes are near even. street fighter seems to make ken seem more powerful but im still unsure who is the most powerful. it seems that ryu is intended to be more powerful but im not sure. their really even.