I think people tend to switch sides constantly, when the Pentium D power consumption was through the roof, people complained. Now that the Athlon 64's are slow, but consume very little power, people complain. If someone gets both right then they complain that the other company doesn't have the same thing. If someone said to me here is a processor that outperforms your current one by 2 times but uses 10 times the power I wouldn't want it.
I don't see power consumption of CPUs or GPUs going down in the near future. Many people forget that we are really at an all time high with the Kentsfields, and I would expect the AMD to be worse since it has an integrated memory controller.