a. ems madara that was shown to us was great, but not invincible. a depleted gaara and a naruto clone forced him to progress to the rinnegan pretty quickly. Hashirama was at a slightly higher level, if he and madara clashed several times and both survived. obviously madara had 2 more ems techniques too. And hashirama's justu shown through Madara, have all been rebutted so far, by Naruto and Oonoki. and kabuto suggests that madara's mokuton is on hashirama's level.
b Minato has shown great feats against kage level shinobi and dispatched them quickly and efficiently every time. against tobi it took 3 attacks, against A and B even less. Hashirama is obviously more powerful than Minato, but he can't do that. And before you bring up the irrelevant fact that Hashirama handled the kyuubi better, that's only because he has a natural aptitude. Yamato handled the 4-tailed naruto better than oro did, doesn't mean squat when you compare their strength.
c. as I said 2 times now, Minato's FTG gives him a big edge. Hashirama doesn't have a direct counter against that, Minato does against Mokuton. And the same applies to most ninja, not many can counter FTG, whereas Mokuton, if a stronger technique overall is more avoidable. Minato's way of fighting just makes him harder to beat.
