Hiruzen was never as good as Mnato !!!

[Bogard]

I agree Minato was stronger than him at that moment. I think he even admitted it in a discussion with Anko, but it's also possible that he wasn't in his prime at that moment

 

[Slug Princess Tsunade]

Both of them were good Hokages, but Minato was obviously stronger.

 

[Exaar]

dude old Madara was like a 100 yrs old !!! You are proving nothing but just pure speculations !!!

It still proves my point that their Old age strength doesn't directly reflect their Primes strength.