Even with the fabrication issues, AMD pushed in Vishera with Piledriver which did fix up some of the pipeline issues but still couldn't match 32nm Sandy and their final answer was releasing those ridiculous FX-9000s that pushed their clocks upto 5Ghz with a 200w+ TDP, my brother had a 8320 and that was a space heater in his room.
For Kaveri,the 28nm fab is not core efficient. Yes the density increased but the tradeoff was that AMD kept the TDPs down, they couldn't cram another computation unit to boost the GPU or increase the clock speeds over from Richland. At least they pushed their memory controllers to run at high clocks so the GPU didn't choked much from the memory bottleneck.
Honestly, I can't wait for a Kaveri laptop, AMD can definitely kill if they can get some manufacturers behind them. It may not match up against a full i7 and dedicated graphics but definitely cheaper for the inbetween as i don't want the stupid gutted ULVs or the pricey full processors+dedicated graphics.
Ever since Intel jumped to 22nm OCing spits out alot more heat and didn't help that they used a cheap TPM that made it very hard to push over 4GHz with the Ivys and Haswell (Devils Canyon doesn't count cause it was catered to the OC people). With Broadwell and the future Intel is just going to continue working on the graphics and small improvements. AMD will continue with the APU for the graphics and security along with hopefully a vastly better architecture reveal for next year.