When was the last time that we had two sensors having the exact same MP resolution but were "different " ?
I'm afraid it looks like the 7D II will have the 70D sensor . The 70D sensor is pretty good though, its just that we are expecting two sensor revolutions in two years ..which is incredibly rare.
Agreed. I know everyone (including me) hopes that the 7DX will have some jaw-dropping sensor tech, but the 7D and 60D shared the same 18MP sensor. The differentiation that justified the price difference was AF system, FPS, buffer depth, weather sealing and build quality.
Why should we expect the next generation of each camera to have a different relationship to one another? It would be unusual for Canon to make a "successor" to the 7D that was positioned differently in the market. Not saying it can't happen -- just saying it seems most likely that the positioning of the two products in relation to one another continues.
The 7DX uses the same sensor as the 70D and continues the differentiation with beefy AF system, FPS, buffer depth and even more solid build. Seems predictable to me. Of course, it's the predictability that gets so many shorts in a twist on this forum...
Your logic might be correct just maybe the relationship is wrong. What is to say the 7DII will not have the same sensor as the 80D