So the data suggests that tablets will cannibalize PC sales?
The data sure doesn't support the "death of the PC" hysteria some analysts have claimed. And you are correct that with MS's Surface Pro and a range of additional Atom and Core based tablets arriving in the market many of those tablets projected to sell in 2013 and 2014 will be x86 based with real Windows 8. Same for convertibles that also offer tablet functionality.
Overall though, what has been discovered is that very few people are able to use an iPad or ARM based tablet to replace a laptop or desktop.