This again? The truth is, Hiruzen was called the strongest Hokage. And Hashirama's hype has not actually compromised this. People keep arguing that Hiruzen can't do anything to Madara etc but that is pointless for a number of reasons;
- Kishi has yet to reveal Prime Hiruzen's true power
- A>B>C logic is futile in Naruto.
The wise man would sit back and wait for Kishi to make his move. At this moment in time, Kishi has done nothing to suggest that Hiruzen's original hype is incorrect. If he was the the strongest Hokage, then HE was the strongest Hokage. Hashirama can be a fairytale etc but this doesn't mean Hiruzen's true power was not equal if not greater than this. Remember, part 1 power levels were different to part 2. If you disagree, then I take it you think Deidara > everyone in part 1.
That, is the truth.