I honestly don't know how many of these games use GPU Physx, you tell me:
http://www.gamespot.com/best-of/game-of-the-year/index.html
You say you care more about what GPU Physx can add to a game then if the physics engine is run on the CPU or GPU. We are coming up on three years since Nvidia purchased Ageia. By now don't you think that CPU physics games should be so far outclassed that they are practically obsolete compared to GPU based Physx games if GPU based physics effects are everything you say they are? I honestly don't know how many games on that list use GPU Physx (zero? ten? I really don't know), what I do know is that at least a few use Havok on the CPU. How can that be when the CPU is so inferior according to you?
I have no doubts that hardware based physics engines are not the future. I do have doubts that GPU based Physx does anything other than drop frame rates for near identical effects than compared to what have with CPU based physic engines. How is it that AMD still sells so many GPU's without a hardware based physics component if it is so clearly outclassed? Physx is a gimmick. The 69xx cards will be successful or fail despite GPU Physx either way.