No, there really isn't.
Intel's 6c/12t parts are $400 offerings in competition with 8c/16t Summit Ridge. On a cost basis, Raven Ridge will probably be a $150-$200 part, tops. Compare that to what Intel will offer at the same price range. A 4c/8t i3 with weaker iGPU and better CPU cores, maybe? Their i5s will be out of that price range.
There's no need for high core count on the APUs; that's what the flagship R7 parts are for in the present and future. Its expected that they'll be paired with dGPUs.
There may be a need for higher core count products with an iGPU for office/productivity and workstation use where a dGPU may be completely unnecessary, though I think the Pro line should fill that gap. On the consumer side, AMD can show a lot of good, common sense by not wasting die space on an iGPU with their faster desktop/workstation CPUs were graphics performance will demand one or more dGPUs.