Some good points made here esp. regarding the locking down of the ECU and VW charging a premium for a "better" model.
It would be VERY interesting to see whether the R and R Evo (if they do indeed put it forward) make exactly the same power after a decent tuner had been given time "unlocking" them both to full potential. Or infact the Evo went on to make another 50+bhp... so the premium price was truly based on hardware.