He was reowned to be the greatest Raikage the village ever had as seen that he had defeated the Gyuki to a stalemate. He was undoubtedly an immensely powerful shinobi and is recognised as Kumo's greatest Raikage. He was able to combat not only an army of ten thousand ninja, but also a tailed beast on his own; the Eight-Tails itself lauded A as a strong and resilient man. A had enormous chakra reserves, enough to seal the Eight-Tails inside the Kohohaku no Johei after its numerous rampages. His high stamina allowed him to fight non-stop for three consecutive days and nights before finally collapsing — something normal shinobi could only achieve with drug enhances.

@jiraiya_sageofoil: u said that pain destroyed the village so he was low on chakra but u clearly never watched this fight because pain said it just takes him 5 seconds before he can use chakra again dont forget all this chakras been built up already