By your logic their is no difference between h1 - h6 in html5. Heck, why not use only h6? I mean, it's still semantic and all
It is not *my* logic, it is html5 logic. h1 to h6 have only relative weights. In the **same** context, h1 is more important then h2, which is more important then h3 etc.pp, you get the point. But as soon as you nest a new context inside the old context, a new h1 is less important then the h1 on the outside (even less important then a h6 in the higher-level context).
Draw a damn outline, i suggested it to you before. You will see what i mean.
But my assumption is backed up by logic and records about Google's previous behaviour before html5
Yes, and Google has never changed it's behavior, it still operates exactly as it did when it launched. Oh wait.
The last few information about Google and <hn>, that can be considered somewhat 'official', are from 2010. In this rapid developing world, you could also say they are from the stone ages, because let's face it, the internet has moved rapidly in the last three years.