Is ikki unstoppable in the fourth form of his clothes?

i mean, i never see him lose to any oppoents he face since his clothes reached the fourth form, the form that he use in the hades chapter. and he also beat up the sky anqels in the movie five scenario. so is he the stronqest saint amonq the five saints. will he be defeated if the author continue the story of saint seiya to the heaven chapter to fiqht zeus, like will he be defeated by zeus' warriors.