The best APS-H body is far better than the best APS-C.
Right. And costs far more than the best APS-C body.
So, if Canon puts an APS-H sensor in the 7DII, is it reasonable to expect that the 7DII will keep the 7D price .
The issue that Canon has is that the 1DX is going to be expensive and the 7D is relatively cheap - this leaves them with a huge gap in their product range.
By taking the APS-H sensor and AF and putting it in a prosumer body and upping the mps then this gap will be filled - and upgrade path for the current 7D users. We are looking at the 3D/6D body here, selling for about $3000 - $4000 dollars.
This in turn would take the pressure off Canon to make huge improvements in the 7D - which otherwise would become the top Canon sports camera if the 1D4 is killed off (as the anti APS-H people are suggesting).
The 7D is a great camera at its price point - but the pros want more and the 1DX falls short from a sports and wildlife perspective due to the loss of the 1.3 crop. Canon needs a model to fight the Nikon D3S - the loss of the APS-H would leave them vulnerable.