No, this is unreal. Because if will be IPC near to SB, Piledriver destroy totally all CPU segment. And with respect, it is not possible now. Example of this: Now FX has 6.02p in R11.5, in Photoshop is near 2500k etc etc. If single thread will be near SB with Piledriver, in multithread has Ivy Bridge no chance. And this is not real from my point of view.
If Piledriver will have clock to clock PII single thread perfomance, means with Piledriver clocks about 3700 MHz at stock+turbo will be better than Denebs on stock (maybe as core i7 930 or 950 at stock). In Multithread could be in R11.5 about 7.5 points and this is simillary as Ivy bridge-DT (expect IB about 7.2 with 3600K).