Dude what do you want everyone to say about Hiruzen?
The guy so far has proven that he's very intelligent, super intelligent even, but guess what? So is Shikamaru.
He's proven that at an old age he can fight pretty well. He took on two weaker versions of Hokage and Oro. But guess what, power scaling in part 1 is a joke compared to part 2. Naruto took on 5 other Edo jin and Obito, all on part 2 power scaling. Not to mention the 3rd Raikage, who would've soloed the weakling edo hashi and tobirama that oro summoned in part 1
Yes Hashirama and Tobirama entrusted him with the village, but guess what? Hiruzen entrusted Minato with the village.
Aside from that, he's smashed a few tree branches with a stick in order to save Naruto. Tobirama and Sasuke have also sliced trough the god tree.
What I'm saying to you is that he doesn't have any feats that are unique to him or anything that really stands out. It's not that he's underrated, there isn't anything to rate him with. Tell me where you would place him and why? He hasn't done anything concrete that we can use to definitely say he's better or worse than anyone else. So I'll ask you again, what the heck do you and all his followers want us to say about him?