Jiraiya. His speed and strength may not be on par with A's but A's moveset is just too limited to deal with jiraiya's vast array of powerful techniques.
Jiraiya, however would most likely lose if he doesn't start out in sage mode, unless he can summon the three boss toads which could probably hold off raikage long enough.
Jiraiya, however would most likely lose if he doesn't start out in sage mode, unless he can summon the three boss toads which could probably hold off raikage long enough.