I can't see Digitimes prediction of the bigger screen Android/iOS Tablet being a big impact. The trend has been for smaller sizes, not bigger.
Also, the Bay Trail based 2-in-1 from Asus is selling pretty well. So the biggest factor is price, and I agree.
The Core-based 2-in-1s(and Ultrabooks) were always too pricey for what they delivered. You'd be stupid to expect Notebook growth based on $1000+ units, but that's what Intel sales projection actually were based on.