I am talking about D7000 having no advantages over D800 other than price.
Ok, but you're the only one talking about that... One theme in this thread is the 'reach advantage' of APS-C over FF, and while in the specific example you've picked, there is none, in general, there is. I could as easily say that the 8 MP 20D has no reach advantage over the 21 MP 5DII...and that's an equally meaningless statement if used to support the argument that APS-C does not have a reach advantage over FF, which is the argument you're making.
You see, that's the mystery. Why I am the only one talking about that? It seems like nobody cares about making things right. If you want a better future, then things have to change.
If Sony can make 24mp APS-C sensor, so they can make 54mp FF sensor as well.
Maybe. But they haven't...and until they do, the statement is irrelevant, and APS-C still has an apparent reach advantage that translates to the ability to get more pixels on target when you're focal length limited.
Yes, they haven't ... and that's the problem