Didn't Hiruzen Lose to Orochimaru
I'm sorry to be quoting you so much, but I have two things to say.
1. In the post you quoted, the person was talking about the Third Kazekage, (Of the Sand Village)
2. Hiruzen was known as the God of Shinobi in his prime,
Hiruzen was one of the most powerful shinobi in history. In fact, he was so powerful that he was admired as the God of Shinobi (忍の神, Shinobi no Kami) in his prime. According to Iruka, he was said to be the strongest Hokage that Konoha ever had as well as the strongest of all the five Kage during his era.[6] Even in his old age, Kabuto Yakushi considered him the strongest of the Five Kage at the time of his death.[7] Enma commented on his battle with Orochimaru, saying that it was "miserable" compared to his prime, even though he had clearly been able to hold his own against Orochimaru and two former Hokage without losing his composure. Even in his old age, his chakra was noted for being very strong, causing a dense effect on the atmosphere when released;[8] furthermore, he was known for having immense reserves of chakra in his youth
Source: Narutowiki